Lot's with run a tank with a single drain if Durso etc but risk with a Herbie is your 1" line is quite restricted with the gate valve (so your not running a fully 1") and you're balanced just on the edge of a flood so it wouldn't take much of a obstruction to go over and have wet floors.
As for doing a Herbie on separate sides, that's my plan. What I'll do is have the height of the overflow chamber being the back up, higher than the primary overflow. Bit of wasted volume, a dry overflow, but think it's the way to go since bulkheads I'll be using are in overflows.
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10-05-2010, 10:44 PM
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