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power outage control

This is a discussion on power outage control within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; --> ''trreherd how would I eliminate my overflow box is there a kit out there or some other way. thanks'' lol you took that in ...

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Old 01-30-2007, 05:34 PM   #11
 
''trreherd how would I eliminate my overflow box is there a kit out there or some other way.
thanks''
lol you took that in the wrong way. I ment that im going to eliminate your overflow bax as a posible cause of your sump overflowing, theres nothing wrong with your overflow box.
Heres what i think is going on.
I think you fill your wet dry up too much so when the power goes out the water left in your overflow and it tubing are draining into your sump and overflowing it. when i shut the power off on my tank my sump rises a few inches.
Or if you did not already drill the wholes on your return you need to do this.
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Old 01-30-2007, 06:38 PM   #12
 
Folks:

I have gotten completely lost here.

I have a check valve after the pump for the flow into the tank.
Should either the pump go out or the power fail the sump cannot overflow from water entering the sump through the return line from the sump through the pump and into the tank.

I maintain the maximum water surface in the sump via a float.
The elevation of the water surface in the sump is such that if the pump or power fails the volume of water between the normal water surface in the tank and the bottom of the overflow weir is less than the volume which can be contained in the sump.

I do not understand "all this hole drilling, breaking siphon, etc.".
What am I missing here?

TR
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Old 01-30-2007, 07:30 PM   #13
 
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Ron Jones.

You are correct about having enough room in the sump to let out that last 1/2" water from the main tank through the wier, or overflow for those not familiar with the term. Many of us choose not to use a backflow as they add restriction. I prefer to have my pump run wide open. To compensate for not having a backflow, or checkvalve, I drill a 3/32" hole at the water line of my suction tube and my return line. As soon as I lose power my return line hole is exposed to air thus immediately breaking the siphon of the unexposed return.
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Old 01-30-2007, 07:36 PM   #14
 
I am note sure where to drill a hole but I did buy a battery back up. it comes with 550 VA or 330 watts. I am not sure how long that will last. I have the sump and heater plugged into the battery back up. Any thoughts on how long it will last?
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Old 01-30-2007, 08:04 PM   #15
 
maybe 4 hrs. And I say maybe 4 hrs. It all depends on how many watts the heater and pump consume. I had one tha small and it would die withen the hour.
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Old 01-31-2007, 04:36 AM   #16
 
Quote:
Originally Posted by caferacermike
Ron Jones.

You are correct about having enough room in the sump to let out that last 1/2" water from the main tank through the wier, or overflow for those not familiar with the term. Many of us choose not to use a backflow as they add restriction. I prefer to have my pump run wide open. To compensate for not having a backflow, or checkvalve, I drill a 3/32" hole at the water line of my suction tube and my return line. As soon as I lose power my return line hole is exposed to air thus immediately breaking the siphon of the unexposed return.
CM:

Think I understand now.

Normal flow from the pump to the tank.
Should the pump fail and water begin siphoning from the tank, through the pump and into the sump a small hole in the tubing located some minimal dimension below the water surface will break this siphon.

Normal flow from the tank to the sump.
I have an overflow weir which controls the water surface in the tank.
Your system must operate via an intake tube the intake orifice of which is located below the normal water surface in the tank and siphons water from the tank into the sump.
Should the pump fail and water begin siphoning from the tank into the sump a small hole in the tubing located some minimal dimension below the water surface will break this siphon.

Am I understanding this correctly now?

TR
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Old 01-31-2007, 04:34 PM   #17
 
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Quite close yes. My main back siphon through my suction tube (being a reef ready drilled tank with built in corner overflow, running through a durso standpipe) is the weir line. It's the return 90 that points back into the tank that I drill. I also drill a small one in my suction tube just because I'm anal about that stuff. It's easier to drill a tiny hole then come up with thousands of dollars for floor repair. Not to mention I made sure my sump could handle 2" of tank volume AND still have 3" of extra insurance room beyond that.
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