i had bought a new fish 2 weeks ago that i think is clouding my water. I cant think of the name (brain fart) the fish that eats the algae and other things on the bottom of the sand and then the sand com out of its gills, anyways it seems like every other day the water gets cloudy. im not sire if its the fish doing so, not enough water circulation, or maybe not enough or adequate filtration i have a sump and the water filters into the black balls .