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Old 04/07/2010, 05:25 PM   #6
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billdogg's Avatar
Join Date: Apr 2008
Location: Grove City, Ohio
Posts: 10,035
Please refer to the attached chart to determine your approximate drain capacity.

As you can clearly see, a 1.5" drain can pretty easily handle AT LEAST 700gph BEFORE siphon effect.

1' drains, on the other hand, which I think is what the megaflow is, begin to have issue at ~300 to 350gph

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File Type: docx Aquarium Bulkhead Tests.docx (21.7 KB, 11 views)
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Current Tank Info: 120 mixed reef with 40b sump, ASM G2 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, no skimmer (yet)
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