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#21
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Thanks, what do you mean ratio of 2-2?
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#22
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2" intake / 2 - 1" returns
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Feed the bear goodies, make a new friend, don't feed the bear............... 8' - 165gal Reef DIY LED's Build 2012 Nano Contest Winner Febuary 2013 POTM Winner 300 gal + 60 gal Complete DIY Build |
#23
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Oh OK so actually you have a 2-1 ratio relating to area (2^2 : 2x1^2)
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#24
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Actually now that I think of it, it's really a 1-1 ratio related to water volume in & out. I might be totally off here because of an 19 hr day yesterday.
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Feed the bear goodies, make a new friend, don't feed the bear............... 8' - 165gal Reef DIY LED's Build 2012 Nano Contest Winner Febuary 2013 POTM Winner 300 gal + 60 gal Complete DIY Build |
#25
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Yeah, the OM will be over the sump, kind of like that
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#26
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Grizz, what was the reasoning behind leaving the closed loop down for the first bit after starting up your tank?
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#27
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Flow is relative to cross sectional area, so for 2" pipe it is 3.14x1^2= 3.14 vs 1" at 3.14x0.5^2=0.79, but two of them so 1.58. That puts it at 2:1. You would need four 1" return lines to prevent a bottle neck.
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Link to my Tank Upgrade Thread Dan Leus, Marine Biologist 20+ Years Marine Aquarium Experience Save the Reef, Buy a Frag! Last edited by FragIt Dan; 02-24-2012 at 07:50 AM. |
#28
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Quote:
Also consider the pump Grizz uses is 1.5" in and out, the intake is one size up which is a good idea considering it's pretty restrictive. The output stays at 1.5" and then splits into two 1" lines at the OM, so at the output side it's pretty much 1-1. So to say there is a bottle neck isn't really correct, if that were true any pump that had a larger suction would have such design flaw. That said it's still pretty restrictive plumbing which, like I said earlier, is typical with closed loops, especially with smaller tanks also containing a sump below. To say 3600GPH is going through it isn't very accurate, in the mid 2000s is probably more accurate. That combined with the return and flow probably sits pretty close to 20X. Would his LPS suffer if he dropped his turnover to 10X? Not likely. Last edited by sphelps; 02-24-2012 at 02:07 PM. |
#29
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It was blowing my sand all over the place because I didnt have my Loc-line in yet and it gave the sand time to settle a bit.
__________________
Feed the bear goodies, make a new friend, don't feed the bear............... 8' - 165gal Reef DIY LED's Build 2012 Nano Contest Winner Febuary 2013 POTM Winner 300 gal + 60 gal Complete DIY Build |
#30
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Oh, Okay. Makes sense.
Well I think I've got it figured out...everything is ordered up. Thanks for the advice everyone. |
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