• Koi can get sunburned!
    They need plenty of shade to get out of the sun. Pond Plants help a lotwith this, so do flat, floating Pond Decorations.



  • The ability of very warm water to hold oxygen is greatly reduced and supplemental air may be required if there are larger Koi present or the Pond has a high number of Pond Fish in general!

This pond was a pleasure to build. We were hired by a widow to rebuild her husband’s koi pond. The original pond was in severe disrepair and had an inadequate filtration system. The new pond features a bottom drain, Aqua Ultima Filter, 75 Watt UV sterilizer, and an Atlantic Water Gardens Big Bahama contractor grade pond skimmer filter. The pond measures 10′ x 13′ and 4′ deep. The customer wanted a floating fountain as well. We have yet to find one that works well for smaller koi ponds, so, we used a Laguna floating plant basket and a magnetic pump.


 In this Issue:

Shockingly Simple!
Niagara Falls or Trickle?
Poisoning your Fish? 

Pond Shock !
 Shockingly clear water!
 Clear up the water and keep it clear!
 All natural and safe it contains literally billions of Beneficial Bacteria and Enzymes to quickly make Pond water clear and safe!
 Get is HERE

Easy to use!
 Open the container and dump it in the Pond!
 It is as simple as that!

Maybe today you want a soothing Trickle,
but tomorrow Niagara Falls?

You can have both in your Pond with the adjustable and remote controlled
AquaSurge Pro Pump!
Adjustable water flow Pond Pump

Extremely Energy Efficient
Oil free
Will not corrode
Remote control (both water flow and on/off capabilities)

What is poisoning your fish?
Ever find dead fish without any visible signs of disease or predator attack?
It is an unfortunate – and rather common problem – especially this time of year.
Often the Pond Fish are now clamoring for food after the long winter,
but the Pond Filter 
has not yet kicked in enough to keep up with the waste
they produce and nitrite/ammonia spikes 
result, which are very toxic to Pond Fish!
It is best to prevent that by adding Bacteria (see above) and adding an excellent
and all natural, water conditioner 
Koi TLC which helps protect Pond fish from this evil.
Koi TLC Pond Water Conditioner and Chlorine and Metals Remover

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info@pondmarket.com , Toll Free: 800-577-5605,
Local: 314-894-2894

PondMarket© The Alternative Pond and Gardens Mart, Inc. All rights reserved.

Cleaning up a pond cost effectively and easily. Got questions? email: info@pondmarket.com




Pond Leaks Debunked


A “leak” with regards to a pond is a 4 letter word, without question. In most cases, there are only a few sources to cause a pond leak:

  • Pond Skimmer or Waterfall Filter

  • Canister (Pressure) Filter O-ring or hose connection

  • Low spot in pond liner/ waterfall liner

  • Hole in pond/waterfall liner (holes do not magically appear in EPDM pond liner; if there is a reason to believe there is a hole in the liner, we typically know the reason and then know roughly where to look for the hole). Patching a hole is easy.

  • Faulty Hose: upgrading to a heavy duty Freeze Flex PVC or heavy duty kink free hose eliminates problems.



Pond Skimmers and Waterfall Boxes typically start to leak at  the 8-10 year mark because the screws or bolts disintegrate. These two pieces of equipment fasten to the liner in one fashion or another and the screws keep the seal tight. Once disintegrated, the seal is compromised. Removing the hardware, applying new pond silicone, and installing new hardware usually solves this problem.

Another source of the leak could be the bulkhead fitting in the back of the waterfall box or waterfall filter. Over time, pressure from the earth pushes against the boxes causing the bulkhead fitting (where the hose attaches) to separate from the tank compromising the seal. Replacing this fitting can solve the problem.


How to Seal a Pond Skimmer and Waterfall Filter

Although these videos show installing a skimmer and waterfall box from scratch, the reseal process is pretty much the same.



Fixing a Low Spot in the Liner

As you can see in the photo below, water can easily find it’s way out of the waterfall. We were able to find this leak in a few minutes after moving a stone. To fix the problem in the photo below, the excess liner on the right needs to be folded up to the left to prevent water from exiting the waterfall.


Finding a low spot in the liner can be tough because pond liner used in ponds and waterfalls is covered with stone, plants, rocks, gravel, etc. Let’s define low spot so we are all on the same page: a “low spot” occurs in ponds where the ground settles in an area, typically not a large area, and pond liner is too low allowing a small amount of water to go out of the pond. This can happen in pond liners as well as “waterfall liners” or an area of the waterfall/ stream area. To find this area, the perimeter of the liner has to be visible.

Most liners are cut after installation. 3-5 years down the road, after the ground fully settles, low spots result. Sometimes there is enough excess liner to pull up and and anchor with stone. Sometimes there is not enough liner to pull up. In this case, it may be possible to use seam tape, also called cover strip or patch material, and seam in a piece of liner. These types of seams will be water tight as long as tape activator, or primer, is used with the seam tape and piece of liner. If not, a new liner may need to be installed (hopefully not).






Easily Finding the Leak: Process of Elimination


  • Fill the pond up (be sure to use dechlorinator)

  • Mark the water line

  • Turn the pump off for 12 – 24 hours (in hot weather, or in ponds with heavy fish loads, be sure to add an aeration kit to prevent fish loss from lack of oxygen)


If the pond DOES leak with the pump off, there are only a few choices:

  • Leaking pond skimmer (if applicable)

  • Low spot in the pond liner

  • Hole in the pond liner


If the pond DOES NOT leak with the pump off, then there are only a few choices:

  • Waterfall box seal is leaking where liner fastens to waterfall box

  • The waterfall box is leaking where the hose connects to the waterfall box

  • Somewhere between the waterfall box and the pond, liner has settled allowing water to flow out of the waterfall/ stream area



|Kaitlin Krull|

One of the most exciting parts about home ownership is the ability to make changes to your home to suit your tastes and design style. While most homeowners focus on interior remodeling projects such as kitchen makeovers, living room renovations, and updated bathrooms, at Home Improvement Leads we believe the area outside of your home is just as important. If you’re looking for ways to renovate your yards—both front and back—then you’ve come to the right place. Here is our list of both essential and creative renovation projects that will give the exterior of your home the TLC it deserves.



Upgrade your front porch

Because front porches are so frequently used, they often see more wear and tear than other areas of your home’s exterior. Increase your curb appeal with a simple and straightforward renovation project for your porch that includes restaining or painting your woodwork, updating your porch furniture and decorative accessories, and giving your front door a new lease on life with a fresh coat of paint, new number sign, and a seasonal wreath.



Give your deck a facelift

Like the front porch, any decking in your home probably looks a bit worse for wear after a summer of get-togethers, lazy afternoons spent outside, and frequent changes in weather. Clean, stain, and protect your decking with oils, weatherproof stains, and treatments to keep it looking its best for another year. If you haven’t yet invested in backyard decking, there is no time like the present to get started on a large scale renovation project like this one.



Overhaul your landscaping

Whether you love to tend an intricate and varied garden full of flowers, fruits, and vegetables or enjoy a more minimalist yard, an overhaul to your front and backyard landscaping will make all the difference to your home’s exterior. While the landscaping decisions you make are up to you and your personal design aesthetic, we recommend choosing a layout and combination of greenery that you—or your gardeners, if you have them—can easily maintain.



Install a backyard pond

For homeowners who love their backyard as it is but want to take their outdoor space up a notch, a self-installed pond is the perfect way to add a personal and whimsical flair to the home. PondMarket has all the tools you need to help you create your own backyard water feature and can even complete the project for you if you live locally to the St. Louis area. They can also answer any questions you might have if you choose to make it a DIY process.



Go solar with exterior lighting

Embracing renewable energy is an exciting prospect for anyone who is interested in saving both the environment and money on their energy bills. While traditional solar panels may be out of the question for homeowners with tighter budgets, it is still possible to embrace the solar trend with exterior lighting. Most home improvement stores offer a wide and affordable range of pathway lights, pendants, decorative strings, and other solar powered lighting options to suit every taste and budget.



Create an outdoor entertainment space

Although the warmer days of summer have ended, there are still—hopefully—a handful of weekends left before snow covers the yard and outdoor entertaining is put on hold until next spring. If you want to brave the cooler weather and upgrade your backyard entertaining area, why not install a pergola or paved outdoor dining area for parties and other get-togethers. Other entertainment options include a grilling station, DIY firepit and seating area, and an outdoor cinema. Even though we think there’s still time to enjoy your backyard this fall, we won’t blame you if you keep this one in your back pocket until next year.


Pond plants not only give the pond a very aesthetic appearance, There are four main classifications of pond plant types:

  • Floating pond plants
  • Oxygenating or submerged pond plants
  • Marginal pond plants and bog pond plants
  • Deep water pond plants

See how to pot and plant aquatic plants and water lilies here

Floating Pond Plants



Floating pond plants, like the name implies, float on the pond surface and do not require any type of pond plant container, pond plant basket, or pond plant pot. Sometimes, floating pond plants can block or clog pond skimmer filters and/or pond pumps and therefore require a floating pond plant holder to keep them in place. Floating pond plant holders, or floating pond plant protectors keep koi from eating pond plants, too. When placed in floating pond plant protectors, floating plants tend to grow beautifully and tall adding perspective to the pond.

There are several varieties of pond plants: water hyacinths, water lettuce, frog bit, duckweed, and azolla to name a few. Most floating pond plants are tropical and therefore need to be taken out of the pond before winterizing the pond. In southern climates, floating pond plants will last all year.

Floating plants are excellent pond filters. Sometimes, in ponds that have effective pond filtration systems, floating plants do not fair well because there is not enough “food” in the water in the form of gunk, nitrate, etc. and must be fertilized using a fish and plant safe pond plant fertilizer. When fertilizing all pond plants, take care to use a fertilizer low in phosphate or use a pond plant fertilizer without any phosphates as to not encourage the growth of algae. If tablet fertilizers are preferred, use them in conjunction with a phosphate remover because fertilizing several lilies at once with fish and plant safe fertilizer tablets will cause an algae bloom.

When relying on floating plants to help filter the pond, remember the old rule of thumb: cover 1/2 of the surface with pond plants.



Oxygenating and Submerged Pond Plants


Oxygenating and submerged pond plants serve the purpose of filtering pond water and providing a place for koi and goldfish to lay eggs, as well as provide a place for fry (baby fish) to hide.

We typically handle anacharis and hornwart which are hardy oxygenating pond plants. Anacharis will flower if the pond is deep enough to allow the anacharis to grow large enough to flower.

To achieve maximum water quality with pond plants, we typically recommend 3-5 bundles of oxygenating plants for every 500 gallons of pond water.

Oxygenating pond plants are typically sold weighted. If not, they can be tucked under a stone and should be fully submerged.



Marginal Pond Plants



Marginal pond plants are the pond plants that grow in 2-12″ of pond water. They are perfect for ledges. Marginal pond plants that grow in very shallow water are often referred to as bog plants. Bog plants do not necessarily have to be in water, but, they need to constantly have wet roots. These are perfect for transitional areas or areas in the pond that are very shallow. Bog plants can be relied on as the sole filter of a garden pond.

There are hardy and tropical marginal pond plants. Most of the pretty pond plants like umbrella palms, papyrus, water cannas, and taro are tropical. Many marginal plants that are primarily foliage such as arrowhead, lizards tail, pickerel rush, bull rush, blue sedge, etc. are hardy.



Marginal pond plants can be placed between rocks in shallow areas of the pond, in pockets of streams or splash pools in waterfalls, or potted in aquatic plant baskets and located on ledges around the inside edges of ponds. In areas where ledges are not level or uneven, mesh planting bags for pond plants can be used to prevent pond plants from falling over and into the pond. Many marginal plants, and even some annual and perennial plants like hostas and impatiens, do well in floating containers or floating planters.

Marginal and bog plants are suitable for container gardens, preformed ponds, and ponds constructed of EPDM pond liner.



Water Lilies and Water Lotus



Tropical Lily



There are two types of plants that classify as “deep water” pond plants with reference to garden ponds: water lilies and water lotus. Water lilies are typically easy to grow. Water lotus are easy to maintain once they are established. Water lilies are available in tropical and hardy varieties and water lotus are all generally hardy.

Although water lilies classify as a deep water aquatic pond plant, there are dwarf varieties available and are well suited for shallow areas, container gardens, and preformed ponds.

Water lilies do well in 2-3′ of water and even 5-6′ of water. They are very easy to add to any pond. When purchased at a pond supply store, they are often ready to be placed directly into the pond.

Hardy water lilies are typically available in varieties that flower yellow, pink, red, white, and different shades of bronze. Hardy water lilies flower all through the spring, summer, and early fall. Hardy water lilies can stay out all season long and are not affected by winter. Although there are articles promoting planting lilies in the gravel bottom of the pond, we recommend using aquatic plant baskets to keep water lilies from overtaking the pond. Water lilies should be thinned out every few years or they will overtake the pond and to regain control takes hours of back breaking work. All hardy water lilies bloom during the day.

Tropical water lilies are arguable much prettier than their hardy cousins. Varieties of tropical lilies are available in almost any color of the spectrum and the pad colors, shapes, and sizes differ, too. Tropical water lilies can be wintered over using the same method as  a bulb. Tropical water lilies are available in varieties that bloom during the day and nighttime.



When potting aquatic pond plants, the first thing needed is a suitable aquatic pond plant pot. There are floating pond plant pots that are fun, too! Most pots for pond plants are perforated so water does not stagnate and have handles for use for easy removal of the pond plants when transplanting or fertilizing the pond plants. Liquid pond plant fertilizers do not feed algae and can be applied directly to the pond water eliminating the hassle of pulling the pond plants in and out or you getting in and out of the pond to fertilize them.

Pond plants need to derive their nutrients from the water, not soil. Potting soils, top soils, and compact clay are great for pond plants but terrible for fish, fish ponds, and water gardens. We count on pond plants like water lilies to help filter the pond water therefore we want to use an aquatic plant media when potting our aquatic pond plants.




When potting a pond plant or water lily, place the pond pond plant in an aquatic pond plant pot, fill around the pond plant with aquatic plant media, and then add a couple inches of gravel over the top of the aquatic plant media to hold everything in place and to deter koi and goldfish from eating the pond plant. This is also a good time to fertilize the pond plant.

Water lilies are potted in a similar manner. Potting water lilies are similar to potting and planting aquatic pond plants. The tuber needs to be placed in a water lily pot or water lily container. These are typically larger in diameter to accommodate water lily tubers.  Place the tuber in the bottom of the container and cover everything except the crown of the tuber (where lily pads grow up from) with aquatic plant media. Once covered with aquatic plant media, add a couple inches of gravel to deter koi and goldfish from eating the water lily tuber and roots. This is also a great time to fertilize the water lily.

See Pond Plant Baskets, Pond Plant Pots, Floating Pond Plant Containers, Fish Safe Pond Plant Fertilizers, and Pond Plant Soil


We offer a wide variety of free standing fountains and water features as well as fountains and water features for garden ponds, water gardens, and koi ponds. We also specialize in pond-less, pond-free, and water-less waterfalls. Recently, we added Aqua Bella Fountains to our product offering.


How to Install Fountains and Water Features


To make a free standing fountain, bubbling boulder fountain, basalt column fountain. a fountain out of a garden pot, etc, there are a few components needed: a basin, the fountain, a pump, and tubing. These components can be purchased together in kit form, like the Aqua Bella Fountain Kits shown above, or they can be purchased separately. If the piece for the water feature or fountain is ready to go, then all that is needed is a basin, pump, and tubing. Fountain basins can be buried in the ground or set on the ground and concealed with landscaping blocks.

See Aqua Bella Fountain Kits 


How to Build Free Standing Waterfalls using Stainless Steel Waterfall Spillways and LED Waterfall Spillways


Building a free standing waterfall can be challenging, but, is nothing that cannot be accomplished with a can do attitude. Free standing waterfall components are typically sold as 2 pieces: the stainless steel spillway or LED waterfall spillway and the corresponding basin kit. The basin kit has the pump, tubing, fittings, and other necessary components with it. The basin kits are made to fit the same size waterfall spillway: i.e. 24″ ColorFalls formal waterfall spillway will use a 24″ Basin Kit. Free standing waterfalls can be installed into almost any wall or block wall and there are spillways narrow enough to be installed into stone columns. These kits do not include the landscape block. Typically, the wall holding the stainless steel waterfall spillway or LED waterfall spillway is built first, the waterfall spillway installed, the basin kit located within the installation, and then the block is installed to conceal the basin kit. Decorative gravel is used to conceal the top of the basin kit. Anti-splash mats come with the basin kits to prevent splash and stainless steel splash rings can be purchased separately to conceal the anti-splash mat.

See Waterfall Spillways and Basin Kits


How to Install Fountain Basins


To create a fountain out of a pot, or a rock such as a bubbling boulder, a fountain basin can be used. The below image is Atlantic Water Gardens Fountain Basins. There is a video below showing how to install a fountain basin. These basins hold a lot of weight (up to 1200lbs) and are perfect for use when turning a pot, birdbath, boulder, or other unique piece in to a fountain. These can be buried in the ground or simply set on the ground and concealed with landscape rock. The pump sits inside the basin and there are channels to easily install the fountain tubing.

See Fountain Basins


Visit our Knowledge Base to read FAQ and answers regarding koi and goldfish diseases and koi and goldfish disease remedies

MinnFinn is one of the only safe medications that is non-toxic, environmentally friendly, and works with as little as a single treatment for MOST koi diseases and goldfish diseases stemming from bacterial infections, fungal infections, and parasites.



If koi and goldfish are sick, test the pond water as poor water quality is responsible for most pond problems.

Potassium Permanganate can be deadly to koi and goldfish if not applied properly or if applied for incorrect diagnoses. It can also damage beneficial bacteria in biological pond filters.


MedFinn-medicated-koi-and-goldfish-foodPond Salt and medicated koi and goldfish food, or koi and goldfish food with antibiotics, are the safest and most effective means of curing koi and goldfish diseases, sicknesses, and health problems. Romet TC is an excellent broad spectrum antibiotic that cures most koi and goldfish wounds, diseases, fungal infections, and bacterial infections. Medicated koi and goldfish food is ingested and therefore is more effective than koi and goldfish medications that are added to the pond water.


Koi and goldfish that have succumb to disease or have health problems can be easily cured provided the problem has been caught in time and provided that we can identify the problem. There are several diseases and health problems common to koi and goldfish. Most koi and goldfish diseases result from poor water quality or improper pond care.


 MinnFinn Cures MOST Koi and Goldfish Disease with a SINGLE Treatment



Common Koi and Goldfish Diseases and Ailments/ Koi and goldfish disease remedies

Koi with red Spots/ ulcers; goldfish with red spots/ ulcers

Causes: ammonia and/or nitrite problem

Solution: Test pond pH, ammonia in pond, and nitrite in pond. Ensure pond filter is adequate; stop or decrease fish feeding for a couple weeks. Apply a pond detoxifier (ammonia and nitrite remover) to provide instant relief and at the same time, apply a beneficial bacteria to consume ammonia and nitrite. Ensure pH is balanced as high pond pH being exponentially increases affects to koi and goldfish. When ammonia is high, it can drive the pH down to unsafe low levels.


Lesions/ holes in body

Causes: ammonia and/or nitrite problem

Solution: Ensure pond filter is adequate; stop or decrease fish feeding for a couple weeks. Apply an ammonia and nitrite remover to provide instant relief and at the same time, apply a seeding beneficial bacteria to consume ammonia and nitrite. Ensure pH is balanced as pH being high can exponentially increase effects to koi and goldfish. When ammonia is high, it can drive the pH down to unsafe low levels.

Cause: Predation

Solution: install decoys and/or cover the pond with pond netting or install a pond protector.

Cause:  Parasites

Solution: Apply a koi and goldfish medication that takes care of parasites.


Flashing; Koi Swimming along pond bottom, then turning sideways and swimming straight up; irregular koi movements; koi jumping out of the water; koi “darting”

When koi flash, often referred to as flashing, they are telling you something is wrong and often look like they are trying to remove something from their body. Koi are intelligent animals and have an instinct to remove themselves from harmful situations caused by bad pond water. This is why koi jump frequently. They are attempting to leave the bad pond water. Koi can and will randomly jump. Random jumping and flashing are not anything to be concerned with. Habitual flashing and jumping is a clear indication of a pond water problem.

Causes: poor pond water quality; high ammonia, nitrite, and/or pond pH high; anchor worms, fish lice, or other possible koi or goldfish parasite

Solution: Test koi pond water. Apply a pond detoxifier and beneficial bacteria. Inspect koi and goldfish for parasites. If parasites are found, treat with Microbe Lift Parazoryne or Medfinn.



Pop-eye or koi with bulging eyes; goldfish with bulging eyes

Causes: ammonia and/or nitrite problem

Solution: Ensure pond filter is adequate; stop or decrease fish feeding for a couple weeks. Apply an ammonia and nitrite remover to provide instant relief and at the same time, apply a seeding beneficial bacteria to consume ammonia and nitrite. Ensure pH is balanced as pH being high can exponentially increase effects to koi and goldfish. When ammonia is high, it can drive the pH down to unsafe low levels.

Cause: improper acclimation process

Solution: add pond salt and apply Koi TLC to reduce koi and goldfish stress

Cause: foreign chemical in pond water

Solution: conduct a partial water change; be sure to use dechlorinator and something to encourage slime production as well as something to reduce stress. There is one product that serves all three of these purposes: Koi TLC.

Swollen koi/ swollen goldfish; bloat; pine cone disease (dropsy)

Dropsy is a result of an infection that occurred or caused internal organ swelling.

Causes: bad water quality, improper feeding, or natural causes

Solution: there are a couple of products on the market to cure dropsy: Microbe Lift Sabbactisun and MinnFinn. Both a very safe and Microbe Lift is an effective herbal remedy that is concentrated and easy to apply. MinnFinn typically only takes one treatment whereas Microbe Lift takes 10 treatments.

Goldfish and koi with fin and tail rot; parts of the koi or goldfish rotted away

Causes: natural causes (koi and goldfish get sick in a similar fashion to humans); poor water quality, and/or stress.

Solution: Pond Salt, Medicated Fish Food, and/or Microbe Lift Sabbactisun or MinnFinn.


White growth, green growth, or brown growth on koi and goldfish

Causes: Fungal infection resulting from fish stress, poor water quality, and/or natural causes

Solution: Pond Salt, Microbe Lift Sabbactisun, or Pond Salt and MinnFinn.


Excessive slime production on koi and goldfish

Causes: Fungal infection resulting from fish stress, poor water quality, and/or natural causes

Solution: Pond Salt, Microbe Lift Sabbactisun, or Pond Salt and MinnFinn


White cottony growth on koi and goldfish

Causes: this is called ich, and typically results from stress resulting from poor water quality.

Solution: Microbe Lift Ich Out; MinnFinn


Blood in fins and/or tail of koi and goldfish

Causes: fungal infection, and typically results from stress resulting from poor water quality.

Solution: MinnFinn


Koi and goldfish dying and have no markings

Causes: bacteria infection resulting from natural causes and/or stress from poor water quality or instability

Solution: Wipe Out Bacteria Control or MinnFinn


Koi and goldfish not being able to swim below water surface

Causes: swim bladder problem

Solutions: Microbe Lift Sabbactisun; Wipe Out Bacteria Control; MinnFinn


Koi and goldfish hovering by waterfall

Causes: foreign chemicals in the pond water, too much algae control, not enough dechlorinator used during a water change; insufficient oxygen levels due to over population; gill flukes or gill maggots

Solutions: partial water changes (using dechlorinator or tap water conditioner), install aeration system and/or aeration monitor; Treat pond with praziquantel (if the problem is from gill flukes or gill maggots); MinnFinn will work well in this instance, too.

Koi and goldfish in group not swimming

Causes: koi and goldfish spooked from predator and/or water quality problem

Solution: install decoy and/or pond net; solve water quality problem


Koi and goldfish will not eat

Causes: poor water quality; predation

Solution: test pond water; install decoy and/or pond netting


Fish Lice

Causes: adding pond fish and/or pond plants from unreliable source; stress from poor water quality

Solution: Microbe Lift Sabbactisun; Praziquantel; MinnFinn


Gill Maggots/ Gill Flukes

Causes: adding pond fish and/or pond plants from unreliable source; stress from poor water quality

Solution: Microbe Lift Sabbactisun; Praziquantel; MinnFinn


This article discusses submersible pond filters, external pond filters, pond skimmer filters, and waterfall filters for ponds.



Submersible Pond Filters


Submersible pond filters are just like they sound: they are made to sit inside the pond and hook up to the intake, or suction, side of a pump.
These types of pond filters are excellent for use in formal ponds where hiding an external filter will not work and for preformed ponds and smaller ponds made with EPDM pond liner. Submersible filters often offer mechanical and/or biological filtration and can be purchased by themselves or as a submersible filter kit. Many submersible pond filter kits come with fountain heads and a diverter valve to run a separate water feature such as a pond spitter or fountain. Submersible pond filters can be added during the construction phase of the pond or easily at anytime the pond is complete. Many strides have been made with submersible pond filters. Now, submersible pond filters can be purchased with or without an ultraviolet clarifier (UV or UVC), too. Ultraviolet clarifiers are discussed further down this page.


External Pond Filters


Gravity Pond Filters

External pond filters come in two forms: gravity pond filters and pressurized pond filters.  Gravity pond filters sit outside the pond for easy access, easy maintenance, and keep the pond aesthetically appealing because they do not sit inside the pond. These types of pond filters can be purchased with our without a UV and can be relatively inexpensive when compared to pressurized pond filters.


Pressure (Pressurized) Pond Filters


Over the past 10 years, pressurized pond filters have become one of the most common types of pond filters for hobbyists. The ease of adding them to any pond, diversity with regards to location around the pond, and the unsurpassed clarity they provide is hard to beat by any other pond filter. These types of filters can be found all over amazon.com, Home Depot, and throughout independent stores across the country. Most of them backwash, they can be purchased with our without a UV, and they can be located anywhere outside the pond. Even better, the water coming out of the filter can be taken up to a waterfall. The main differences between pressure filters now days are availability of replacement parts and easy of backwash, and effectiveness of backwash. Many filters found at big box stores do not have available parts such as lid rings, replacement foam, and replacement o-rings. Many main stream filters like Laguna Pressure Flo filters are cumbersome and labor intensive to backwash. Some of the pad-less filters like TetraPond and Pondmaster pressure filters are not effective at polishing pond water and are ineffective unless the pumps powering the filters are very powerful.


So, what’s a “good” pressure filter for ponds?

In our opinion, PondMax is an excellent pressure filter that solves all of these problems. Parts are readily available, the backwash feature is easy to perform, Pond-Max-Pressure-Filterand they polish pond water. We have installed several of these in the St. Louis area and customers are happy with the performance and clear water provided by PondMax pond filters. What’s more, they have a high flow rate. Most other pressurized pond filters are limited by there flow rates which means that hobbyists required a pump for the pond filter and a pump for the waterfall. Most other pond filters are limited to half of their capacity with regards to flow rate. What does this mean? This means that if a pond filter is rated for 1,000 gallons, the maximum flow rate is 500 gallons per hour. PondMax stepped up to the plate and designed a filter that can handle a pond pump equal to the capacity of the pond filter. For example, the PondMax 3600 pond filter can handle 3600 gallons per hour. Even better, PondMax filters with the UV option have larger UV clarifiers. The PondMax 7200 pressure filter comes with a 55 watt UV!



Pond Skimmer Filters and Biological Waterfall Filters


Pond Skimmer Filters




Pond Skimmer Filters come in a wide array of sizes and have a multitude of features and benefits. There are pond skimmers for preformed ponds, pond skimmers that provide sole pond filtration, pond skimmers that accept UV lights, and pond skimmers for large koi pond applications.

Pond Skimmers, along with pond pumps, can be the heart of the garden pond. When installed, pond skimmer filters are the entrance to the filter system for pond water. Most pond skimmers will remove 80-90% of debris from the water surface before it has a chance to collect on the bottom of the pond. It is safe to say that pond skimmer filters serve many purposes: they house the pond pump making it easily accessible, they mechanically filter pond water before it gets to the pond pump therefore serving as a pre-filter, and they keep the pond pump out of the pond for a more aesthetic appearance.

Pond Skimmers are a diverse piece of equipment in that there are many accessories available for pond skimmers. Auto-fill valves, UV lights, and bottom drains are components that can be added to pond skimmers to lessen maintenance requirements of any pond. Higher end pond skimmers come with fake rock lids.

One key downside to most pond skimmers is that they cannot easily be added to an existing pond. Most, if not all, pond skimmer filters are designed to be buried in the ground next to the pond and fastened to the pond liner. A hole is cut inside the pond skimmer face plate to allow pond water to enter the pond skimmer. Adding a pond skimmer filter to an existing pond can be done, but, sometimes there can be a lot of involved labor.

Biological Waterfall Filters


Biological waterfall filters are an excellent choice for most koi ponds. There are many different brands on the market. For the most part, biological waterfall filters operate the same way in that water enters the bottom of the unit, collects, and travels through mechanical and biological filter media. Mechanical filter media is typically a filter pad or filter foam and biological media is typically landscape lava rock, ceramic rings, biological balls (bio-balls), filter floss, or bio-blox. Lava rock used to be the standard for biological pond filter media but the other choices have surpassed it in popularity.

Waterfall filters are the starting point of a waterfall. Although waterfall filters can be added anytime a waterfall is added to the pond, they are typically used in new pond construction because that is when most waterfalls are constructed.

Waterfall filters serve more that the important task of filtering a pond. Those of us that have rebuilt our waterfalls several times know that it can be tough to build a natural looking waterfall by taking a hose and lying in on rock and then covering it with rock. Waterfall filters take the water from the hose and spread it out to a desired width. They have a lip, or weir, that then delivers anywhere from a 12″ – 4′ wide sheet of water that can be diverted over rocks making a cascading effect or a sheet of water that falls straight into the pond.

In some cases, we may be adding a waterfall and do not need the filter, building a pond-less, pond-free, or “water-less” waterfall and want to use a waterfall spillway. This component is just like a waterfall filter minus the “filter part”.

This section of pondmarket.com was developed to help answer some of the questions you may have about everything from building a pond or pond-less waterfall to pond supplies like water fountains, free standing waterfalls, and pond pumps and pond filters, to green algae control, Koi and Goldfish health to water quality and water lilies to lotus.

Pond Algae Information


Pond Algae comes in many different forms, even different colors (green Algae, red Algae, brown algae). The two kinds of pond algae frustrating backyard pond owners most often, though, are “green water Algae” and “string Algae” (also called “blanket weed” or “hair Algae”). More Info.

Beneficial Bacteria Information


Beneficial Bacteria are essential helpers in the garden pond and for pond filters. They munch on pond fish waste and other organic matter and convert deadly ammonia into first nitrites and then into nitrates thus being an integral part of pond filtration. The nitrates are taken up by the pond plants. This cycle makes the Beneficial Bacteria essential to the health and well being of the water and the creatures of the pond including Koi and all other pond fish, it also helps reduce algae. More Info.

Pond Filters Information


Pond Filters are generally required to keep a Garden Pond or Water Garden healthy and clear. A Koi Pond requires more filtration than a Water Garden or a Goldfish Pond due to the large mature size of these beautiful Pond Fish. More Info.

Pond Fish Information


Pond Fish are cold water varieties and can remain in the pond during the winter with proper preparation, as long as the pond is deep and large enough and care is taken that it does not freeze completely. Koi, Goldfish, & Orfe. More Info.

Pond Fish Health Information

Pond Fish, like all living creatures, require that certain conditions in their environment be met to sustain their health in Ponds Koi, due to their mature size and their longevity, need a little more care than goldfish. More Info.

Fountain, Water Feature, Free Standing Waterfalls, & Formal Waterfalls Information


A Water Fountain in your Garden Pond lends a touch of elegance to a garden pond or water garden as well as to larger water features such as farm ponds. It also adds much needed oxygen to the fish pond to aid the filtration of the water and keep pond fish such as Goldfish, Golden Orfe and Koi healthy (and alive) during hot summer days. More Info. 

How to Clean Up and Maintain Large Ponds


Pond Plants Information


Visit our knowledge base and click on the above link for all kinds of information on pond plants. The terms “Aquatic Plants” and “Pond Plants” represent a wide range of Plants growing in several habitats. Some Aquatic Plants grow in deep water. Lotus and Water Lilies (Deep Water Plants) are the most famous of this pond plant group. Others grow in the shallower margins (Marginal Plants) of the pond. Many pond plants like the growing conditions in the moist bogs (Bog Plants) on the rim of the pond and another group grows completely submerged in the pond water (Submersed or Oxygenating Plants). Still others just float on the surface of the pond (Floating Plants) and need not be rooted in anything at all. These plants are all important to the natural balance of the garden pond. More Info.

Pond Fish Food Information

Good quality Pond Food is formulated to keep pond fish healthy and helps maintain the quality of the pond water. Pond fish live in a special environment that allows only limited chances of finding natural food that would satisfy all their nutritional needs. It is also important that pond food be easily digestible to limit organic waste (which turns into Algae Food) produced in the pond by using ingredients that are easily and more fully digestible by the fish. More Info.

How to Install a Preformed Pond and a Pond Using EPDM Pond Liner


If using a preformed pond, select a quality Garden Pond that will meet your needs. Many Ponds and Pond Kits are available. Look for features such as plant shelves for aquatic plants. Good pond kits contain Pond pumps and separate Pond filters. More Info.

Pond Pumps Information


Pond Pumps are re-circulating, and most often submersible pumps that power Waterfalls, Water Fountains and Pond Filters in garden ponds. Pond Pumps are the heart of the pond and should be chosen with care. More Info.

Pond Ultra-Violet Clarifiers Information


Pond Ultra-Violet Clarifiers expose water to ultra-violet light that clumps algae particles together to make them large enough to be picked up by the Pond Filter. There is also some evidence that they are beneficial by keeping the pond water healthier for the pond fish. More Info.

Pond Water Quality Information


A backyard pond or water garden is a little world and eco-system we created that may need our help occasionally to achieve the natural balance necessary to sustain pond life and healthy pond fish. This is usually not difficult. More Info.

For instant Information about Ponds and using our Pond Calculator, please check the links in the menu on your left. There are also plenty of other things Pond related to do here at PondMarket.com.

Check out Pond Photos of our customers, read our Pond FAQ’s and Pond Testimonials, and Pond Articles.

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5000 gph Pond Pump!

Artesian2PMU-Cutout-e1459813977638Choosing a pump for a waterfall in a retention pond, earth bottom pond, or lagoon is similar to that of a koi pond in that you have to choose a pump that can deliver enough water to get the amount of water needed up to the starting point of the waterfall. We typically recommend external pumps for this application because they are less likely to clog and there are no electrical components in the water posing a threat to swimmers.

When choosing a pump to aerate pond water, whether it be for water quality or to sustain and improve fish health, typically a submersible aeration system or floating fountain are the two best choices.

Airmax_Pond_Aeration_PS20_SystemAeration systems are the most efficient tool to use when aerating a large pond. They use little power versus the amount of air they produce. Subsurface aeration systems consist of a compressor that sits outside of the pond and air stones, or diffusers, that are in the pond. The diffusers are connected to the compressor via tubing. The compressor quietly produces the air and pumps it to the diffusers thus aerating the pond. The only downside of a subsurface system is that it does not provide the beautiful display of an aerating fountain.

Aerating fountains are exactly as the name implies. Any quality aerating fountain is going to float on the water surface. This prevents the motor from clogging. Aerating fountains typically consist of the float, motor, propeller, and an optional light kit. All aerating fountains that float have to be anchored down or tied to the shore. Aerating fountains are typically sized 1:1 with regards to horsepower and pond size; i.e. 1 1/2 acre pond = 1.5 HP aerating fountain.

north_star_01_enlargementTo calculate the size of a pond in terms of an acre: measure the longest and widest sides, multiple them together, and then divide your result by 45,560 (square feet in an acre).

When sizing a subsurface system, any reputable manufacturer will have size recommendations for each system.