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Old 11-22-2003, 01:51 PM   #1
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OVERFLOW BOXES, DANGER OF FLOODING????????

I was recently told to set up a 100 gallon I have as a fresh water tank because it is not drilled (and I dont want to take the chance of it breaking if I have it drilled) and the overflow boxes used in wet dry filters can flood your home . How big of a problem has this been?
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Old 11-22-2003, 01:52 PM   #2
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iv never heard of them flooding.
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Old 11-22-2003, 01:58 PM   #3
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I din't think they would be selling something that just leaked at random . thanks
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Old 11-22-2003, 02:06 PM   #4
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NP, the ones that iv seen have slots for water too pour out back into the main tank incase if filled too high
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Old 11-22-2003, 06:27 PM   #5
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Any overflow either built in or hang on will have a risk of overflowing into your floor but thats where responsible tank maintance comes in. If proper maintance is done overflows will run for years and not have a single errent drop fall onto the floor.
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Old 11-22-2003, 07:56 PM   #6
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The danger is not the overflow itself running over. If the siphon breaks, the return pump will continue to pump water up to the main tank, but it won't be flowing back to the sump. The tank will run over until the sump has been emptied. As fishfreek said, proper setup and maintenance will reduce the chances of this to nearly nothing.
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Old 11-22-2003, 09:17 PM   #7
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What about siphon breaks during power outages??? Are there any preventive measures we can take? I recently read something about drilling holes in the return.

Anyone know if that will work?
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Old 11-22-2003, 09:21 PM   #8
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YEAH I HEARD THAT TOO DOES THAT ACTUALLY WORK?????
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Old 11-22-2003, 09:35 PM   #9
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Prince,

Depending on the overflow box that you choose will determine how you have your setup....setup. A CPR overflow box (thats the name brand) has an airline hole on the top in which you have to put a powerhead attached to the overflow airline spout heres a link for a pic of reference:
http://marinedepot.com/md_viewItem.asp?idproduct=CR1517

To draw the water out of the syphon i would recommend a rio 600SVT. These work better than other PH since they draw the air from the intake not the output of the PH. A built in overflow box will be far more better and easier to maintain. I have both so you'll have to take my word on that. A built in overflow you wont have to worry about a syphon breaking etc.

You are correct on the situation of drilling a hole on the return to break the syphon of flow back down to the sump. What you will want to do is drill a 1/8" hole just below the water line for this to work. Otherwise what happens when the power goes out is since the return is a "pressured line" from the PH pushing the water back up it will begin to syphon the water back down until the syphon breaks. Then your sump has the possibility of overflowing! Thats not ever fun! Make sure you test your setup every so often to make sure the water that does syphon down to the sump will not overflow your system.
Glad to help!
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Old 11-22-2003, 10:30 PM   #10
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Quote:
Originally Posted by gooyferret
Prince,

To draw the water out of the syphon i would recommend a rio 600SVT. These work better than other PH since they draw the air from the intake not the output of the PH.
I'd have to disagree on the choice of powerheads. IME, Rios have a bad habit of not restarting once they have some hours on them. Although it's true that the Rio does pull air through the impeller, a Maxi Jet 1200 will reprime a siphon tube by itself with the included attachment and, IMO, is a much more reliable pump. A venturi attachment to draw the air through the impeller is available for the MJ, although it's not really necessary, from Premium Aquatics.
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