Current setup is a standard 75g tank (48"x18") footprint, running a Fx6, maxi-jet 600 power head, and 250w heater. Tank temp stays around 79-80F. Currently in the tank I have 1 temensis and 3 kelberi. The temensis is a solid 3" or so and the kelberi are anywhere from 2-2.5" is estimate. I have several pieces of driftwood in the tank also. The temensis is very aggressive towards the other bass, butts into them and chases them a little more than I'm comfortable with. I'm upgrading to a 125g (72"x18") this weekend in hopes the extra space calms down some of the aggression but I'm curious if anyone else had any constructive suggestions? I do have a small school of red-blue tetras that are systematically being killed off, started off with 6 and I'm down to 4 with one almost dead. I'd go with silver dollars as dithers but I'm trying to keep a few live plants in the tank. Would adding more bass help? I was debating on picking up a couple melaniae from aqua scape in hopes they'd start to school as a group as opposed to one species attacking another.