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Old 09-28-2011, 04:47 PM   #421
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Because the 3/4 is under pressure and the 1" is gravity feed.
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Old 09-28-2011, 04:48 PM   #422
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Quote:
Originally Posted by coffeetwitch
Because the 3/4 is under pressure and the 1" is gravity feed.
Mechanically forced.
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Old 09-28-2011, 04:50 PM   #423
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And is anyone taking pressure into consideration?? If a 1" pipe flows 660gph, is that under gravity only or pressurized?? I could be wrong but pressurized pipes can push slightly more flow right
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Old 09-28-2011, 04:52 PM   #424
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Absolutely, pressure will flow more. But is gravity enough to be noted?


I'm just seeking info too and in no way shape or form saying I know anything.
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Old 09-28-2011, 04:54 PM   #425
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Now I'm more confused....:-(

Is there just a way to know how much flow a 1 inch hole going into tubing generates? Surely there has to be some math behind this LOL

As far as the split, I was gonna use a T but now that you mention it a Y fitting would make sense. Thanks!
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Old 09-28-2011, 04:56 PM   #426
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Tell me about it. The more I look the more I'm lost.

We both have projects we need this info for.
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Old 09-28-2011, 04:59 PM   #427
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I'm soo close too, I'm at the cusp of setting up. And this info will be handy in figuring out a lot of things regarding my tank as far as waterflow. I'd love to know whats going in and whats coming out gph wise and also so I can be sure i have enough flow overall including my powerheads.
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Old 09-28-2011, 05:00 PM   #428
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i was always under the impression that a reef ready tank's overflow was rated for 1200gph. maybe it's 600? is it enough? of course it is. why would you need more than that?
btw, i have two 1' bulkheads on my 250 gallon tank.
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Old 09-28-2011, 05:07 PM   #429
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two 1 FOOT bulkheads?? well no wonder you have great flow in your tank lol.
@carey- i believe i have a 1" pvc pipe sitting around, if i do,ill run a quick test on it and let you know.
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Old 09-28-2011, 05:07 PM   #430
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An to add to mr_x. CPR overflows are rated by the bulkhead in the bottom of the box. The 600 gph has a 1". The next size up 900? Has 1.25? If I recall properly. That's what he was trying to tell us off the lifereef site correct?

Stop over thinking this and base or decisions off of those predetermined flow rates from manufacturers?
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