I have 2 baby oscars (1 3inch albino and 1 2inch tiger) in a 55g giving one away. Tank has a nice DIY 20g sump with live rock refugium and 3 prefilters. Looking for suitable bottom feeders to pick up the mess, Any suggestions? I just recently moved and traded the community fish I had before for these two. I also plan on getting another power head to give the main tank a boost in water flow and circulation. Not worried about the load the tank is a beast, just space. By the way not my first rodeo just looking for ideas on clean-up crew.