I'm trying to set up a 29 US gallon tank, but the only water I can get seems to always have stuff floating in it. Even if I let it run through the filter for a few days, half of it will settle to the bottom and the other half will float around up top. The stuff looks white, and I'm not really sure what it is. My main tank (10 US gallons) had the same problem, but it went away overnight. I tried using an old cotton t-shirt, but that didn't seem to affect it all that much. All my water seems to be this way, no matter what tap I get it from, even water from my reverse osmosis system seems to have it. Are there effective options for filtering the water?