Just picked up a Penguin Biowheel 350 for my 75g tank. I already have a canister but its a little underpowered for my tank. With the added aeration of the biowheel I have noticed that my water seems cloudy likely due to aeration. Is the spraybar from the canister filter, the biowheel and just one 18" airstone enough for my tank? Curently I have two 18" airstones up against the back wall.