hello people, i have a 7ft x 2.6ft x 2.6ft tank (approx 220 uk gallon) with a 70 uk gallon sump, combined water volume 290 uk gallons. i have 1 peacock bass,2 parrot fish, 1 flowerhorn 1 black belt and a african pike. i would like a bottom feeder that wont grow to big and i dont like plecos. anyone have any ideas please