Hi everyone I have a 65 aqua clear acrylic tank with a built in wet dry on the back portion of the tank . I recently moded it so that the water flows in to the wetdry and where the return pump was I put a pvc pipe down to my fuge . now the question I have is about my return it goes from the sump as one outlet and branches off to two with two ball valves that return to tank . I am currently running a 802 powerhead to return the water from the sump but I have to keep one of the returns closed because their is not enough water pressure . my question is should I get a mag 9 to use as a return pump so I can open both reurns or just leave as is and add another powerhead in the tank . I've added some picks thanks for the help