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#1
11-11-2007, 07:02 PM
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Not going to back siphon. Its a overflow like any other. Just splits into 2 lines where it drains into sump. And I have 2 shutoffs, one on each drain into sump. So, the theory is, I'll throttle the "sump" return to what I need, then leave the "pump" line wide open. Might need to throttle them both a bit though, as I have dual 3/4" durso overflows feeding the 1" drain manifold. heres a pic
 Ohh, and for the pump feed line to the tank, I have a swing check valve in there, AND the outlets are just below the water surface, around overflow level. Soo, any drinback will be the same as the overflow anyways. Ohh, and the pump is running on a UPS Last edited by banditpowdercoat; 11-11-2007 at 07:06 PM. 
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#2
11-12-2007, 01:53 PM
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I get what you're both saying! Thanks for the responses. Bandit...does your method result in lots of microbubbles into the display tank? I would think a direct line into the return section (as opposed to through several baffles) would do that.
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~Drew 10G Nano * 10G Sump * Deltec MCE 600 Skimmer * JBL Viper 150w MH * Zeovit * Vortech MP40W Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon. ~S. Ertz 
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#3
11-12-2007, 03:44 PM
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Drew, I havent completed my sump yet, but, just running it in a 5g bucket with the one drain next to the pump, no microbubbles. I put on a 90 and a T on the drain kinda like a reverse Durso drain. The drain comes into the 90 first, then to the side fitting of the T. One end of the T is above waterline, the other end is below. The water/air comes into the T, and the bubbles go up the one end of the T, and the water down the other. I'll get a pic to show you what I mean
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