pondwater is very muddy from pans of soil and sand I put in to overwinter frogs. Will floculant and multiple filter cleanings do the job of clearing it ?
A Flocculant will definitely help pull suspended particles together making them more easily caught by your filter. Cleaning your filter frequently will help clear your water.
You could also use a Pond Vacuum to help speed up the process especially if most of the soil and sand is settled.