I work for a company that uses industrial filtering systems for water and
found a filter to use for a prefilter that I think will work great. The
question is what micron rating is good for a pond? I would like to filter
out some of the green crud that keeps me from seeing deeper than 5 inches. I
am hoping this will work. I thought about getting a 20 micron or smaller and
seeing how long it takes it to clog up. If it would last a week that would
be great.