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Old 07-06-2005, 06:30 PM   #1
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Pump size for closed loop system?

I'm soon setting up a 120 gal with a closed loop system. Given about a 4-5 foot head, what size pump would you suggest?

How about for the sump pump as well? It's going to have a 1.5" feed from the tank into the sump/fuge and then, of course, the return. What size should these two pumps be? Thanks!
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Old 07-07-2005, 06:54 PM   #2
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What kind of tank you going to be setting up a reef? What kind of corals you looking at keeping you will want the pumps to turn the water over in the tank about 15-20 times per hour. I would recommend RIO or MAG pumps. HTH
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Old 07-07-2005, 07:27 PM   #3
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mag36?

i am in the process of replacing my mag9.5 with a mag 18/24 to get my 15-20cycles/hour
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Old 07-07-2005, 07:55 PM   #4
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For the sump something like 700-900 GPH turnover and then for the closed loop something like 1000gph turnover. That would give you good flow and should eleminate the need for additional water flow in the tank with powerheads.
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Old 07-08-2005, 12:14 AM   #5
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Thanks all. I currently have a 55 gal I'm upgrading. I keep mostly softies with two SPS's (birds nest and montipora) right now. I'd like to add 1-2 more SPS and maybe a LPS into the 120.

I know I wanted around 15-20x water turnover but wanted to get a sense of balance (ratio) between the two pumps.

Fishfreek,...sounds good. Your suggestion gives me 15x at 1800 gpm. What pump types do you suggest all? Mags, etc. THANKS!
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Old 07-08-2005, 09:23 AM   #6
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I like Mag's for submersible pumps. Your close loop you can use an external pump since you simply have an inlet and outlet and for external pumps I like little giant. External pumps are air cooled vs water cooled so they will raise the temp of the water less. I belive the Mags will be water cooled if they are run external.
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Old 07-08-2005, 11:05 AM   #7
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Thanks again!
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Old 07-09-2005, 07:39 PM   #8
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why so much
i thought 10 x was the rule?
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Old 07-09-2005, 11:28 PM   #9
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I've been told, 10x for softies and 15-20x for SPS/LPS.
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Old 07-11-2005, 05:00 PM   #10
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ok thanks for the info
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