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Old 01/08/2008, 05:42 PM   #1
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Sump issues

The tank I'm using to make my sump is 31" x 14" x 17" and my skimmer's footprint requires 10" of the 31". That leaves 21" to be divided between the refugium, return and baffles. How much capacity do I need for the refugium / return? My pump will fit in an area 4" wide but in my opinion that is not enough capacity, not to mention overflow if it looses power. Any suggestion?

I guess I need to mention the display tank is a 90 using two 1" drains and the pump is 900 gph.

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Old 01/08/2008, 06:28 PM   #2
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heres a good site with some good sump examples

a left over shrimp shedding is not "a sicilian message meaning luca brasi sleeps with the fishes"
fish are friends, not food

Current Tank Info: 90gal salt, 2 250mh 14k hamiltons 2 110 actinic, 127lbs LR,50lbs tonga 70lbs indonesia 7lbs tonga branch asm g3
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Old 01/08/2008, 06:50 PM   #3
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go to the home page and check out reefkeeping mag. it features an article on sumps this month. sumps 101

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Old 01/08/2008, 07:45 PM   #4
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You dont need a big area for the return pump, the water can be above the baffle which separates that area from the rest of the tank. The baffle in the return area I think its only to separate the pump from the refugium and to give it access to less area in the event of an overflow clog so it has less available water to pump out.

My AquaticLog:

Current Tank Info: 70G Custom Miracles Display 90G Total System Volume
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Old 01/08/2008, 08:32 PM   #5
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You also need to keep in mind that the water in the return section is going to vary, due to evaporation. I lose about an 1 1/2 each day (my return sump is 24 X 15).

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Old 01/08/2008, 09:47 PM   #6
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Dustin is right. If you have an ATO then your return pump section can be reasonably small (8" of the 21"). However if you don't have an ATO, I would want to have a significantly larger return pump area. If not, you will be constantly adding water. Go with an ATO and make your fuge as big as possible. Include deep sand bed, live rock and chaeto for excellent nitrate reduction.
Good luck.

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