I added 32 ounces about a month ago and no more. I don't use weekly doses of polyquat but may start. My FC is now at 12 and I am starting to see the crap again. I brushed very well tonight and added 3 qts of bleach. When I think I got the stuff whipped it or something comes back. Can't figure it out. I may take some pics over the weekend and post. maybe it just dirt?
Mike