I just recently experienced the same problem. I decided to treat the tank with selcon ang garlic and in about two days there was no sign of ick. Go to a health food store and pick up a bottle of kyolic garlic(not cheap though) soak your food in selcon and about 4 or 5 drops of the garlic for...
I tried the 212 and i crapped out on the second week. I would not recommend this powerhead to anyone. save yourself the money of replacing it and buy a good powerhead like a maxi jet or a hagen and maybe even use a wavemaster. The powersweep is a good idea but it is not constructed well, very...