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#1
01-06-2011, 06:04 AM
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Ok if I understand correctly this will work.
Green is my returns, yellow my intakes, red my outputs. Should the returns be 1.5" and the drains 2"?  Last edited by lastlight; 01-06-2011 at 06:07 AM. 
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#2
01-06-2011, 06:16 AM
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Quote:
The principle is correct, you may well need more outlets in the bottom due to the length and size of the tank, depending on your personal preference, outlets could be 1 1/2 or 1" . Drain bulkheads would be 1 1/2, there is no head loss to pumps in closed loops, the head from the tank will feed more than the pump needs, you can use 2" but isn't etched in stone. It's now 2:15am here and I need to be up in a few hours, 15 more minutes of Top Gear on BBC and I am off to bed, catch you all in the morning.
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#3
01-06-2011, 06:22 AM
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The Hammerhead pushes 6000gph at 0' head.
So 2 x 1.5" drains will allow me to diffuse that pull sufficiently in your opinion? As for the outlets...I can keep the pair under the overlow and have another pair of 90s in the bottom and spread them out some. Any reason the pairs should or should not line up? Is staggering better? And of course 1" outlets will be easier to hide. I'm not sure with fittings like these whether or not flow can really be broadened much by using a larger fitting. I intend to use your omniflex nozzles. Perhaps they don't come in 1.5" I'll have to look.
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#4
01-06-2011, 06:27 AM
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Regarding the omniflex tho...in Dez' build they appear to be 45deg fittings. Would that not push flow up and work against the sump returns? 90s would push all the way to the end (all working together) and then hit the pane and go up and then pushed across the top. Maybe the 45s are better what do you think? Better for a sandbed I'm sure.
Two more outlets: 
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