Hi...can any of you guys recommed a bottom feeder for a tanganyikan tank...currently i have a few 4 multi's,4 oscellatus gold 3julidochromis 1 tanganyikan catfish, a spotted synodontis and 2 common plecs. I wana put some more fish in this weekend..kinda want something to go round cleaning up the mess from the frozen cichlid mix which i feed them. Tank is a 180L so nothing too mad!