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- Feb 23, 2018
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Hey guys, so I’m having an issue with my ato setup that when the pump shuts off, the water continues from the resevoir into the sump. Below I attached pictures. The red circle depicts the “anti-siphon valve” while the Blue circle shows the outlet of the ato hose. It’s hard to see in the pic but the end of the hose is a few inches above the water. To the left is the reservoir with the ato pump. Please what can I do to stop this siphoning problem?!?! Thanks