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Old 09-06-2005, 12:23 PM   #1
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Need 1800 gph for a 120. Pump suggestion?

I need to flow about 1800 gph for a new 120 gal. Which pump would you use? Gen-x? Little Giant? Dolphin?

Thanks all!
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Old 09-06-2005, 05:46 PM   #2
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Mag 18? I use a Genx PCX40. Nice pump but not real quiet. Are you looking for an internal or external pump?
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Old 09-06-2005, 06:04 PM   #3
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I would stay away from that size mag pump. Check out dolphin pumps. I love mine. I also use Iwaki pumps.
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Old 09-06-2005, 07:20 PM   #4
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Did you have a problem with the 18?
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*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,
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Old 09-06-2005, 09:39 PM   #5
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I had a heat and noise problem with a 36. I use two mag 12's for making SW each one will heat 35 gallons of water from 60 to 80 degrees overnight. I would not want something that generates that much heat in my tank. The smaller mag pumps seem to work great. I use one in my sump.
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Old 09-06-2005, 09:59 PM   #6
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That seems odd. I have heard bad things about the 36 but I know alot of people that use the 12 and the 18's. I run 2 mag 7's and a Mak4 in my system with no heat issues.

20 deg is a lot!
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*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,
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Old 09-06-2005, 10:29 PM   #7
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My mag12 generates a lot of heat in the tank as well.
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Old 09-06-2005, 11:59 PM   #8
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Seems I'm looking for an external, to answer ellisz's question. At that flow rate, seems to be the way to go. So, gen'x is pretty loud, huh? Too bad, I was considering that one. Wouldn't like that.

Are Dolphins more quiet? Little Giants? I know of iwaki, just seems pricey and I'm told they're loud too.
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Old 09-07-2005, 12:06 AM   #9
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I have a 7900gph dolphin and it is very quiet. I also run a Iwaki 70rlt on my protein skimmer. The dolphin is much quieter but the Iwaki is high pressure pump and has a heavy load so it is not a fair comparison.
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Old 09-07-2005, 08:02 AM   #10
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I have heard great things about Panworld pumps(similar to the Iwakis) and the Sequence Reeflo pumps. The Reeflo Dart is virtually silent and puts out a ton of flow.
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*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,
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