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Old 03-27-2004, 08:17 PM   #11
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I am using a mag 7 and an overflow with a single 3/4" output. Tuning the 2 took a few hours, but wasnt really hard. I put a 90 degree elbow at the surface where the water returns to the tank. This returns the water to the opposite side of the tank as the overflow. If the power goes off, the water level in the tank drops an inch until the water reaches the opening of the return line, then the air stops the siphon. I put a mark on the sump so I know how much I can top it off with and not risk flooding in the case of a power outage.

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diy, diy sump, sump

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