I have an unused container of ChemClean you could use it if you like. I bought it but also bought another power head at the same time. The increase flow cleared it up in about a week. Siphon out clumps, and incerase flow. I arranged my powerheads in a way to keep the flow very circular in the tank, and then after about a week I switched them all to the opposite direction (Clockwise first week, and then counter clockwise the second week) after it cleared up I went back to my powerheads aimed all over the place "Regular " set up. I also started running carbon at that time, so this may have had some effect.
Robb
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