i have a 24g aquapod and was worndering how i can get the surface of the water cleaner. i do water changes and everything but the surface always have debris on, right now i am running the sponges that i clean every week when i do water changes. I have also been thinking of up-grading the stock and seeing if pulling more water through the sponges will help. I am also running a rio 180ph inside the tank as well. i had the same problem with my old 12 nano. i hate this, when i remove all of the sponges in the back and just run LR will this help my problem.