DIY Sump

Bad link.
 
If i'm looking at it right, you dont need to worry about it. From what I can see, the flow would stop as soon as the power head did. You might get a little back flow into the tank, but it shouldnt cause an overflow. You could always put a check valve on the powerhead side to be sure.


I'll read that in more detail and give a more dicisive answer later on...that is a very interesting setup.
 
ya but i don't plan on doing it like he has it with the power head. My tanks pre drilled with a overflow in it. So I need something that would be able to stop the water from both lines. I know I can put a cheak value in the end with the pump but what about the other end?
 
You cant put a check valve on the overflow side.

The only think I can think of that you may be able to do is use a normally closed 120v continuous duty solenoid valve. The only problem is, if that solenoid fails and closes, it will burn your pump up.

Can you not make a more conventional one that goes under the tank?
 
They're very easy to make if you have a spare tank laying around. I made out out of a 55 (that was donated) for about $30 + pumps.
 
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