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Old 01-24-2016, 11:15 PM
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Etaloche Etaloche is offline
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Quote:
Originally Posted by maron6977 View Post
Is there enough volume in your sump if return pump is turned off ? Watch out for back flow from returns !
Did a quick test
In my leak test the pump chamber was way overfilled so it won't normally be that full
Here's how high the water gets when the pump is off. It doesn't even fill up to my 1st chamber even when overfilled so I think I'm in the clear



Quote:
Originally Posted by The Guy View Post
A small hole drilled at the water line on the back side of the return pipe also works well to break the syphon in the event of the return pump going off or a power loss, on page seven I think I see a check valve in the return piping which is a good idea too, make sure to keep it clean as those pesky little snails can cause it to stay open sometimes.
Ya I don't trust these things completely. I've been trying to find the check valve for the loc lines as a second measure but it's either not available or ridiculous to ship.
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