<a href=showthread.php?s=&postid=11902319#post11902319 target=_blank>Originally posted</a> by NYIntensity
When filling, fill the DT up to but not over the overflows; fill the sump ALL THE WAY. Turn on your return pump. That should start the cycle of water moving out of the sump, filling the tank over the overflows, water will move through the drain into the sump, and bada-bing, your sump is now moving water, serving its purpose. The benefit is that if the power ever goes out (which it inevitably will at some point), the most water that will make its way back into your sump will be the original volume you filled in the sump...
