shep
Member
I have a prefilter in my overflow keep medium size objects out of the overflow, and a filter before it goes to the sump. They both get an over abundace of algae that I cant seem to stop. The prefilter can be dried out and chipped of and washed and it stays gone for a long time. However the filer in the overflow will not come clean or give up its algae. I have done everything from air compressor to shop vack and it stays in there. Any ideas? A friend suggested clorox to clean it and flush it after it dried. This scares me a bit. Just wondering if anyone has ever dealt with this and if so how did ya fix it?