1Fish feces separator will separate most fish feces out, to solve the problem of frequent cleaning filter cotton. 2Adopt stainless steel technology, small interspace, good effect of isolating fish feces. 3Water inlet port using 360 degrees suction feces port, ensures no residue fish feces around the fish toilet. 4Rotation can adjust water Inlet suction, when hole location overlap, suction decreases, when not overlap, suction becomes larger. 5Collecting fish feces and purification water quality, convenient sewage disposal port.