125gallons, 14 africans, 1 redtail shark, 1 synodonis cat. I haven't had very much experience with pleco's mainly because I don't know much about them and didn't want to end up with a river monster. However I would like to have a prolific bottom feeder for the food scraps that don't get eaten. The sydonis only seems interested in the veggie pellets and doesn't really seem to do the housekeeping that I'm looking for so... any thoughts on a good size pleco for my tank?