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Old 08-10-2008, 07:53 PM   #1
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Starting Fuge Build - Advice?

I have a 90 gal that I want to add a fuge to. It will be mounted under the tank in the cabinet. I have an old 10 gal that I wiould like to use. This will be in addition to a wet/dry that I am currently running. This fuge will operate independantly of my wet/dry. The purpose for this is to house and create pods for a Manderin Goby that one day I would like to have.

I am going to have to use a siphon overflow and am looking at a 300 gp return pump. My current sump return is 750 gph.

I want to house a heater and protien skimmer in this as well. I have looked at different plans available. I am kinda nervouse about getting the math correct because I am afraid of overflowing my tank or fuge.

Any wisdom would be much appreciated here.
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Old 08-11-2008, 09:09 AM   #2
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Sounds pretty simple. Just make sure your overflow is able to handle the amt of water the return pump is pumping. Once you have it set up, only fill the fuge maybe 1/2 way, then turn off your pumps to simulate a power outage. Watch how far the fuge fill from the water returning from the tank. Once you know the water level to set in the fuge so it can handle the return from the tank, you're good to go.
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Old 08-11-2008, 09:35 AM   #3
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you could also drill a hole just under the water line on your return, to limit the amount of water that will be siphoned back when the power goes off.
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Old 08-16-2008, 10:31 AM   #4
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Would you consider not running this fuge independently from the filter? Can you add a pump to the filter to pump water over to the fuge, then use a gravity overflow to return the water to the filter? This would allow a little more depth for the fuge and take away the risk of overflow in the fuge.
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Old 08-16-2008, 10:42 AM   #5
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Quote:
Originally Posted by SparKy697 View Post
Would you consider not running this fuge independently from the filter? Can you add a pump to the filter to pump water over to the fuge, then use a gravity overflow to return the water to the filter? This would allow a little more depth for the fuge and take away the risk of overflow in the fuge.
This is a far better idea. Trying to use 2 overflows and 2 pumps on a tank is dangerous. You will never get the flow exactly correct.

The best option is to drill the 10g tank and plumb it into your wet/dry. Let the water flow through your fuge into the wet/dry and be pumped back to the display.
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Old 08-18-2008, 02:47 PM   #6
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go here to get a visual of what zigggy is talking about

http://www.aquariumadvice.com/forums...rk-104807.html
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Old 08-18-2008, 09:19 PM   #7
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I have a gravity overflow returning the tank water to the filter now. So then I would take the pumped water from the filter to the fuge....then pump it back into the tank?

If so, I have a 700 gph return pump from my filter and have read you want the fuge to be 1/2 the gph of that. how can I do that with this set-up?
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Old 08-18-2008, 11:10 PM   #8
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try this

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Old 08-19-2008, 12:18 AM   #9
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So the overflow will supply directly to the sump only. Then the return from the sump will be slpit between the tank and the fuge...then Fuge back to the sump?
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Old 08-19-2008, 10:09 AM   #10
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yes that should work. make sure you plumb the the fuge to the wet/dry, sump as high as you want the water in the fuge, i used 1". your wet/dry filter will take all the back flow. also you want to drill a small hole on your return line just below the water line for a siphon break.


if you have 2 lines on your overflow then use my other drawing a couple post up its labeled try this
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