Ok I am somewhat disappointed with the flow in my cube. I have 2-Tunze 6080, which you would THINK would be enough flow. Problem is, the dims of the tank are 30x30x24", so the lengths are so short that the stream does not diffuse the water well and basically blasts a stream of water at the wall, which makes its way down and really doesn't dissipate across the tank well. Anyone else with a cube having these types of problems? If so, what have you done to distribute the flow better?