I have just finished installing a closed loop and found that the mag 24 pump I'm using is just too loud. There is no way I can live with this noise. I have to turn my television almost all the way up to hear it. And to think it has only be running for a little over 1/2 hour. Now I'm looking for advice on other means of creating as much flow in the tank as possible. I'm looking for recommendations on powerheads and other equipment I could use (please provide brands, models, etc)? I'm giving up the idea of of a closed loop altogether. The pipes are in the back going over the top of the tank. The tank will be as close to the wall as possible making servicing it extremely difficult. AARGH the noise!