i would guess, but
here is what i would do, is 2 powerheads, at lower to mid levels(pointing in opposing directions(no whirlpooling)), and one upper level(pointing at the surface), and the canister(which only creates movement at the surface, and see how that goes, yyou would probalby be fine with 2, but the 3d maynot be a big problem, if you need to, you could remove one more, or add a wave maker, which would control them at different times, giving a wave like motion to the tank(runs a cycle so that water moves in different directions always changing)