Im currently running a sponge filter attached to a Maxi-Jet 400 power head in my 45 gal aquarium. Im mainly using it for biological and water flow benefits as I run 2 Penguin 200 filters as well. The sponge is approx. 2"X 3" I originally purchased it for a much smaller quarantine tank but never used it. Is this a good size for my size aquarium? What are the service/cleaning requirements for this type of filter?