I should have been more specific. I already have 2 powerheads, they are powersweeps which don't work worth a (bleep). I am planning on buying a couple more better ones, but this one for 10 bucks will be more for aerating the water for water changes.
atleast 2 of the pump 3 powerheads but i would use 2 of pump 4. i use a seio 2600 which is 2600 gph wide flow, and a mj mod 1200 which has just a little more flow than the seio and also just added another mj modd and since than corals love no low flows areas and and rock and corals look better. Honestly you need lots of flow.