That's quite dumb. Shrimp actually clean the water by feeding on waste. I'm sure other crustaceans do it as well to some extent. I only have shrimp in my aquari

That's quite dumb. Shrimp actually clean the water by feeding on waste. I'm sure other crustaceans do it as well to some extent. I only have shrimp in my aquariums which I've branded as the cleanup team specifically because they keep my tanks clean.