How To Choose a Pond Filter

  Many types of Pond Filters are available today: Waterfall Filters, Skimmer Filters, Biological Pond Filters, Mechanical Pond Filters, Submersible Pond Filters, “out of the Pond” Filters, Pressurized Pond Filters, Back-Flushing Pond Filters and so on….. Many Pond Filters are a combination of the above.

Waterfall and Skimmer Filters: These two types of Pond Filters are most often used in conjunction. The Waterfall Filter should be located at the opposite end of the Pond from the Skimmer Filter. This arrangement insures maximum circulation, since the Pond Pump is housed inside the Skimmer Filter and the water is pumped to the Waterfall Filter and falls from there back into the Pond. Waterfall and Skimmer Filters are to be sized to take into consideration not only the size of the Pond, but also the size of the Pond Pump needed to produce the desired Waterfall. Skimmer Filters are also mechanical Pond Filters, since they employ some sort of filtering material to keep the surface of the Pond clean. Waterfall Filters are generally also biological Pond Filters.

 Submersible Pond Filters are useful for smaller Ponds and/or Ponds that do not have an area around it where an “out of the Pond” Filter could be easily hidden from view. They offer a combination of biological and mechanical Pond Filtration and must generally be cleaned more often, since they tend to pick up all the debris from the Pond bottom. Submersible Pond Filters are, with few exceptions, the most reasonably priced Pond Filters.

Most Pressurized Pond Filters today are also Back-Flushing Pond Filters. They are very easy to clean, offer mechanical and biological Filtration and most often incorporate a UV Light Filter to keep the Pond Water crystal clear. Pressurized Pond Filters are always “out of the Pond” Filters. They can be partially buried in the landscaping around the Pond and be easily cleaned by just switching a valve and/or deploying a lever or other mechanical device. 

Pond Volume Calculator

It is critical that a Pond Filter and the Pond Pump that powers it be sized correctly. Pond Filters that are too small for the Pond will not keep the Pond Water (or the Pond Fish) healthy or clean. Pond Filters are engineered for a certain “flow rate” and it is important to select a Pond Pump that is close to this figure. It does not hurt if a Pond is “over filtered”, but it is dangerous to Pond Fish if it is “under filtered”.

Read about UVC Lights – Pond UVC Filters Ultraviolet Clarifiers

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