Response to bought the Pentair quad 60 and the backwsh valve Pentair 263064 FNS Plus Quad D.E. Filter PVC Push Pull Valve; the directions said top - waste, middle ' from the pump' and bottom to the pool - disaster- plunger up as directed- water did not filter but went to waste and when we put the plunger down the filter reversed and blew out the D.E. and now the quad cartridges are full of green algae debris - give me a heads up on how to plumb the valve and how to clean the cartridges- pls.

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