Mine isnt showing any signs of clearing after about 4 1/2 days of
running. I have an 18 watt turbo twist 6x flowing at 850GPH in a 1750
gallon pond that gets full sun for about 6 hours a day. The quilt
batting in the filter has been gunked up with some brownish/gray
muck(dead algae?) the last two days though. So maybe its working, just
not working wellt enough to keep up with the algae's rate of growth.