I have freshwater 90 gallon discus setup with built in sump filtration. The sump is about five gallons of open space in the mid compartment with lots of different forms of filter media.. anyways i thought it would be a good idea to add a couple of these small one inch cleaner catfish, i think they called them ottos or pandas, they resemble a Chinese algae eater. Is it cool to place like two in my sump to keep things clean or is this a bad idea?




