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Old 02-11-2014, 10:33 AM   #11
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Look on fish-street carey. When I said cheaper, I meant cheaper to operate (less energy cost). Maybe same purchase price.

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Old 02-11-2014, 10:35 AM   #12
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If you want a good pump that's fairly cheap I would go with the lifeguard aquatics models. I have used those in the past on my sump setups and they work great. I would order another anyday
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Old 02-11-2014, 11:15 AM   #13
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What is the difference between a DC pump and a mag pump?

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Old 02-11-2014, 11:31 AM   #14
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DC pumps cost close to half as much to run and have 6 speeds with a feed mode that shuts it off for 10 minutes. It also starts up in slow then ramps up to the speed it was last set for.
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Old 02-11-2014, 08:02 PM   #15
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I haven't looked into the DC pumps as of yet, but being a journeyman electrician with a lot of experience in converting AC to DC, you lose some energy in the converter. I do like the "ramping" ability of DC motors and DC voltage is less likely to harm fish in failure than AC pumps. As far as half the cost to run, I would be a little suspicious. Look at the AC amperage draw of these DC pumps and compare it to a standard AC pump, that will let you know if it is indeed cheaper to operate.
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Old 02-11-2014, 09:22 PM   #16
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A mag 24 draws 265 watts while the Reef Octopus Diablo draws 85 watts at 2275 GPS. I believe the Speedwave 2640 GPS draws 85 watts too. I'll be buying the Speedwave hopefully this month and I'll put a watt meter on it to verify when I do. I'm not much of an electrician but I've worked as a electro-mechanical technician for a bit over 40 years. I know it's a lot easer to convert AC to DC than the other way around. I'm currently running a mag 18 for my DT and a mag 12 for my refugium and skimmer at 255 watts. Replacing both mag pumps with a DC pump will save 170 watts and with a improved plumbing design I think I will keep the same flow or close to it.
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