We recently moved and moved the fish from our 55 gallon tank into a 20 gallon tank in our RV while we moved in. Now that the 55 gallon tank is set up in the new house, we would like to replace the bulky over-the-side filters with a cannister filter. We're looking at Fluval 307, but can't find a cover and lights that will accommodate the side placement of the intake and output tubes. Any suggestions? Thanks!