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Old 08-20-2004, 11:28 AM   #1
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How much water flow?

How much water flow will I need in my tank?

I have a 37 gallon cube shaped tank.

I have a Magnum 350 pumping somewhere around 300 gallons per hour through my tank. what size Power head am I going to need?

(i also have a cpr bak pak 2 that is pumping water if that matters.)
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Old 08-20-2004, 12:28 PM   #2
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most don't count the skimmer current towards total water flow. You want at least 370gallons per hour of circulation. A small powerhead of around 100gph at the opposite end fo the tank from the magnum outflow should be sufficient.
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Old 08-20-2004, 02:22 PM   #3
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I'd get a MJ600 or if this is a reef then a MJ900.
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Old 08-20-2004, 06:51 PM   #4
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400-600GPH

Each tank is unique and how you have it aquasacped is gonna have a big impact on what your 'total' flow is needed. You could have 1000GPH in there and still have deadspots of movement if the outputs and aquascaping is wrong.
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Old 08-26-2004, 01:04 AM   #5
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just an update. I went with the smaller Maxi-jet 400 bringing my total waterflow up to between 400 and 450 GPH on a 37 gallon cube.

I've got the intake and output tubes for the Magnum 350 at oppisite ends of the tank which really helps.

We will see how this works. I shouldnt have any dead areas at all. hopefully everyone in the tank will like it!
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