Yeah I have read that about the Clown Loaches. I know a guy that had just a pair and they did pretty well. But at the same time every situation is different so...What are some larger Catfish that could work? I know that Tiger Shovelnose and Redtail are obviously out due to their size.
One of my favorite bottom feeders I have in my 210g is my brown hoplo cat. Gets along with everyone and is always out looking for food. Basically an overgrown cory cat in the way it acts but about 5-6" long.