I have a 27 liter (7.1 Gallon) tank that is freshwater with 1 Betta, 2 Neon Tetra's and 2 Guppy's. After a painstaking few months with the tank finally getting everything correct, the tank now sustains the fish perfectly. There is one thing that I've never been able to figure out is what is the white cloud that forms in the fish tank's water. It doesn't appear to be affecting the fish (no lethargic behavior or anything similar) but it is an eye-sore.
Recently I bought a product called Aqua Clear that is supposedly meant to remove this white could:
Aquarium Science Aqua Clear is a water treatment designed to clear cloudy water in freshwater goldfish bowls, aquariums and ponds. Aqua Clear binds suspended solids together and produces a precipitate which settles and is drawn into the filter leaving the water crystal clear.
I've followed the instructions once which was 1 drop per liter yet I haven't noticed any different. It says you can repeat this process in 24 hours if necessary but I'd prefer to put as little chemicals into the water. I have a small filter that surely wouldn't have affected the Aqua Clear's process but I'm not sure what to do.
What is this cloud and how can I remove this?