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#4
09-01-2012, 06:39 PM
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maybe i missed it but do you have standpipes in your overflows?? this would keep your height set ,your gatevalve fine tunes the rest to a syphon ,trying to tune a herbie wthout standpipes and just the overflow boxes is a losing battle imo.
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........ Last edited by reefwars; 09-01-2012 at 06:45 PM. 
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