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Old 07-13-2005, 12:01 PM   #1
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to much flow

I have a 70 gallon and a 29 gallon sump. I have a 1400 gph overflow, two maxijet 1200s and two maxijet 400s on an electronic wave maker is this too much flow.
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Old 07-13-2005, 12:53 PM   #2
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You're overflow gph rate is related to your return pump. What are you using as a return pump?

Your maxijets are for water movement within the main tank (if I'm understanding your post correctly). The 1200s are 295 gph. I think the 400s are about 100 gph so, you're a little over 10x your tank size which is fine - but it is unrelated to your overflow.

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Old 07-13-2005, 08:26 PM   #3
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what type of overflow do you have that give you 1400 gph? Thats a lot of flow, which is a good thing.. If your return pump handles that you could probably loose a power head or 2. It also depends on what corals your keeping, you can get away with less flow with soft corals.
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Old 07-15-2005, 10:58 AM   #4
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Sorry it is the CS102, it is only rated at 1200 how much flow should I have 10 times the tank or system. I was thinking of replacing the 400s with 1200s because my new electronic wave maker.only powers one at a time. It switches to a new powerhead every 2-30 seconds. My return pump will be a mag drive 18 which is rated at 1350. I will put it on a ballvalve to town it down
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Old 07-15-2005, 11:37 PM   #5
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the rating of your overflow is an upper limit, not how much you're flowing currently. That depends on the head (distance from your sump's water level to that in the tank, measured vertically, plus some corrections for every bend in the pipe). Measure the head and figure out what your pump is supposed to put out at that pressure.
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