For me, the filter is in a basin with Triops (which of course are constantly changing) in use. He is very quiet and does not take up much space. Since you can almost completely disassemble it, he is also easy to clean. I really like that you can put the sponge horizontally. Something bothers me that you can not fix it. He does, however - unfortunately! - Even if he is the kinda dirty flows not much water. Think the sponge is a little too tight. So the Triops have quite stormy sea and after a few days only a slight ripple to a clean filter. But if I can live with it.
