Ok so I got a canister filter for my 30 gallon tank. My question is that now there is little to no disturbance of the surface of the water. My fish do not come to the top of the water to eat and the flakes do not seem to be breaking the surface tension and falling down. Am I missing someting here? Are there any cures to this problem with out taking the spraybar out of the water enough to create some disturbance? (because that is really loud and would have defeated the whole purpose of buying the canister filter)