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Old 02-18-2006, 10:01 PM   #1
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GPH rating with overflow durso...

This standpipe for external overflow boxes, says it's handling 300gph. I've got about 500-600 going through my overflow per hour. This stand pipe is only 1" and I don't really have room for more than the 2" coupling...so, this seems to be the biggest that I can fit. Does anyone use this design and push more than 300gph through it? I'm getting worried that I may have to buy a new overflow box that can fit a bigger durso.

this one.....

- Skins

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Old 02-19-2006, 03:59 PM   #2
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He says it should handle more than 300 gph. Might have to try it and find out

*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
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Old 02-20-2006, 09:38 AM   #3
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Well, I"ll play with it a little more - but, I just tried it.....and it doesn't
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flow, gph, overflow

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