I've had my tank up and running for a few weeks now. 70g acrylic with sump box, fake plants, driftwood, 9 tiger barbs, and the temp at 82 degrees. Now it looks like tiny lint particles floating around in the water, and even sticking to the sides. Is it maybe my sump is not working properly? This set up was used when I got it so really I don't even know how the sump is supposed to work. It also came with a cannister filter but I didn't hook that one up because I couldnt figure out how I would run or where to put it. Anyways, I'm worried maybe my filter is not working properly. Any ideas?