sump siphon break - what happens when the power comes back ON? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 04-10-2013, 08:47 PM Thread Starter
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sump siphon break - what happens when the power comes back ON?

Here's a great intro article I found on sumps. It's a great primer for me. I'm probably not gonna get into a sump anytime soon, but I'm just edumacating myself.

He talks about how a properly built sump should not flood if the power goes out, and talks about drilling a hole that will become a siphon break so that your tank won't drain into and exceed the volume of your sump.

That's great and all - but what about when the power comes back ON? Now your sump pump is putting water back in your tank, but the siphon is broken, water is not returning to the sump, and your tank overflows.

Surely I'm missing something here, but what is it?
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post #2 of 6 (permalink) Old 04-10-2013, 09:01 PM
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That is a nice article.

The siphon break hole is on the return. When the pump is turned back on water is pushed up from the pump, fills the tube and out into the tank. When power is turned off unless there is that siphon break hole or the return is close to the surface of the water so air gets into it it will turn into a siphon that empties the tank. You don't want the return to be a siphon, it will become one unless you are aware and take steps to prevent it!
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post #3 of 6 (permalink) Old 04-10-2013, 09:13 PM Thread Starter
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OH! It's on the return!! duuuuh. *hits self in head*

got it.

Thank youuuuuuuuuuu!
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post #4 of 6 (permalink) Old 04-10-2013, 09:19 PM
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I had a nice reply typed out, but then I messed it all up.

read about BeanAnimals setup. Downright legendary stuff it is. Fail proof and quiet to boot.

http://www.beananimal.com/projects/s...ow-system.aspx
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post #5 of 6 (permalink) Old 04-10-2013, 09:31 PM Thread Starter
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i feel ya, lub. I hate when that happens!!!
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post #6 of 6 (permalink) Old 04-10-2013, 09:41 PM Thread Starter
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Quote:
Originally Posted by thelub View Post
I had a nice reply typed out, but then I messed it all up.

read about BeanAnimals setup. Downright legendary stuff it is. Fail proof and quiet to boot.

http://www.beananimal.com/projects/s...ow-system.aspx

dude! "legendary" is exactly the right word! it's a little bulky, but after reading through his reasoning and how it works, I'm an instant convert! thanks for sharing!!
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