we just got a little tetra filter for one of our 5 gal, but when i tried it on the 10 gallon for size (to see how it works with the divider) i noticed that i couldnt position the filter so the water flow would pour into both sides of the tank. it hangs into the tank too low. i dont need this one for my divided tanks, but im going to be buying filters for them soon, and im wondering what filters do you guys use in your divided tanks so that both sides get good water flow. Im asking this because when i ran it in just one side the water surface on the other was far calmer then the other, and im concerned about equal flow. Also is there a write up on sponge baffles on here anywhere?