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Problem with Pump Reversing Flow
Hello All,
I recently installed a water feature in my backyard and I am having a problem with the waterflow that has dumbfounded me. I installed a 20 gallon circular pond container. In the container, I have a couple of cement blocks that support a ceramic garden planter just above the surface of the water. A 1/2 tube from the pump (lying at the bottom of the pond container) runs through the bottom of the ceramic planter. The intended effect is for the planter to fill with water and spill over the sides into the pond container below. The distance from the pump to the discharge is about 3 feet in height. The pump is 310 gph. My issue is that the pump runs and fills the planter until it spills over the side (as intended). It does this for about 25 seconds. Then the pump reverses and sucks water back down through the 1/2 inch tubing (slowly for about 90 seconds). Then the process starts over again: filling the planter and spilling over the sides for 25 seconds followed by 90 seconds of reversal. I can't figure this out - why is the pump switching back and forth on its own? At first I had the discharge sticking straight up in the planter. Then I thought I would add another length and bend the tube under so the discharge now faces the bottom of the pot (Hypothesis being that the weight of the water on the discharge tube was forcing the water back down). However, this has not solved the problem. Any suggestions anyone may have would be greatly appreciated. Thanks in advance. Marty Cleveland, Ohio |
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