I want to change my grids because DE powder keep going in my pool. I have a new manifold, DE grids and multi port valve, and NO ONE can figure out it feeding back
Nor sure what DE filter you have so please clarify that. On a Pentair DE there is a o-ring where the manifold attaches to the standpipe. Ensure that is in place and not cut. Also, there is an air bleed assembly on top of the manifold that has a screen, ensure that is in place and not damaged.
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