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uncleof6 · 09/27/2012, 12:05 PM

2.75' to the edge of the hole, as you have drawn, would be 3.625" to the hole center which is in between the two figures I gave. (3.25" - 4.25".) 2.75" to the center of the hole, would place your dry emergency inlet above the top of the overflow weir...

The original recommendation, concerning the starting issue you are trying to prevent by lowering the siphon, was raising the open channel ~ 1/2" give or take.....

09/27/2012, 12:05 PM	#5066
uncleof6 Registered Member Join Date: Jul 2004 Location: AWOL Posts: 12,013	2.75' to the edge of the hole, as you have drawn, would be 3.625" to the hole center which is in between the two figures I gave. (3.25" - 4.25".) 2.75" to the center of the hole, would place your dry emergency inlet above the top of the overflow weir... The original recommendation, concerning the starting issue you are trying to prevent by lowering the siphon, was raising the open channel ~ 1/2" give or take..... __________________ "Things should be made as simple as possible, but not simpler." (oft attributed to Einstein; most likely paraphrasing by Roger Sessions; compactly articulates the principle of Occam's Razor) Current Tank Info: 325 6' wide Reef Last edited by uncleof6; 09/27/2012 at 12:14 PM.