okay, i am wondering what bottom feeder to help with the bottom of my tank. i currently have 1 tiger oscar that's only 5 inches long at most, i also have a iridescent shark that is about 4 inches long( i wanna get another one of these). also this is going into a 55 gallon tank(i know i need a bigger tank). main thing thats on the bottom is the oscars crap.
Bottom feeders aren't garbage disposals! They eat food, not poo.
The cure for your situation is called cleaning...