Quote:
Originally Posted by Doug
Its around a 2in. hole. Not sure of the exact size but could look it up. Anyways it takes a bulkhead for a 1.5 in. stack and drains, which is the only size I would do unless going duel overflows or the ever popular "herbie". I have never done one but with the popularity on here, thats the route I would choose now.
Lots of plans on here for the herbie, including with externals. I think my bit may be to large for them however.
My tank has a 1.5 in. Duraso, which I drilled my self but uses the standard corner overflow.
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Thanks, I think that may be a bit big - I was planning on the herbie, as you say it seems like a sensible way to go. I was going to use 1" bulkheads into 1.25" drains, because I don't think I'll have enough running through the sump to keep a 1.5" drain in full syphon mode. I know I can adjust the flow down with the valve, but I want the water to be going through the pipe fast enough to purge any bubbles that might get in there before they can break the syphon.
I was also going to go for the version with the third emergency emergency drain - basically because I'm paranoid.
