when you do you plumbing for your sump put a valve on the line to the tank. Doing this will help you control how much flow you can have i know in my old 75g i did this i have a 1200 mag as well. its better to have more then less i think because you never k now when you need more flow or less flow. I did a split as well i had a small flow going into my fuge with a trickle into my tank and rest of flow into my tank.
I also had 2in drain and 1 1/4 return worked good
Last edited by Steve-O-; 04-14-2009 at 09:25 AM.
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