Hi what powerheads are good out there how many needed for a 150 gallon tank. 6 feet long tank wide or deep dimension, I know tall tank no good cause hard to reach to clean I had a 35 gallon hexagon tank so tall I needed a step stole to reach down inside to clean a pain. But anywas I want verygood equipment know out there in the market my plan is to setup once nut right any advice suggestions comments please feel free to thank you