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Old 09-20-2013, 12:07 PM   #1
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Return pump space

I'm building my sump out of a 55 gallon tank. I am using a mag 12 for my return. The baffles I am using are 10 inches tall. How much space should I make my pump area
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Old 09-20-2013, 12:34 PM   #2
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Typically you want the return section to be the smallest. But big enough to fit your pump.
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Old 09-20-2013, 12:40 PM   #3
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So an area of 3"x12"x10" should be plenty of room
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Old 09-20-2013, 01:09 PM   #4
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I'd make it bigger. That is only 1.8 gals, and you may see significant evap in that small space. But if you have a pretty accurate ATO, then you should be fine.
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Old 09-20-2013, 01:17 PM   #5
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I'd make it bigger. That is only 1.8 gals, and you may see significant evap in that small space. But if you have a pretty accurate ATO, then you should be fine.
I don't completely understand. Will each of my 3 chambers in the sump evaporate at different speeds. I know my skimmer area is going to be 10"x12"x10". Just trying to get the most out of my fuge area
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Old 09-20-2013, 01:29 PM   #6
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I don't completely understand. Will each of my 3 chambers in the sump evaporate at different speeds. I know my skimmer area is going to be 10"x12"x10". Just trying to get the most out of my fuge area
Your chambers will all stay the same level because your return pumps must fill those until they overflow to get the water back to the return pump. therefore if you have less water in the system your return pump area will be lower.
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Old 09-20-2013, 01:32 PM   #7
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How big would you guys make it
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Old 09-20-2013, 01:40 PM   #8
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As I mentioned, it does depend on the ATO your gunna be using. Some have a larger hysteresis curve (the difference between turning on and shutting off), while some are much more accurate (less hysteresis). If your going to rely on manual resupply, then I'd go bigger. But a decent ATO should make the 1.5 gal (I knocked off .3 gal for the size of the pump) sufficient. But I wouldn't want the pump touching either wall either. That will make it louder. maybe a wee bit wider might be called for.
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Old 09-20-2013, 01:50 PM   #9
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Ok. What ato system would you recommend. I haven't thought that far yet was going to manually top it off but I did plan in adding an ato
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Old 09-20-2013, 06:51 PM   #10
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Make your baffles 12 inches tall im running a 55 as a sump also 1st chamber is 12x12x14 in 2nd is 12x12x18 return is 12x12x15 this gives me apx. 10 gallons as a return area The return is where all of your evap will show try to make it as large as you can
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