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    Hayward DE4820 Filter very low pressure reading & VariFlo Multiport Valve water leak

    Hi, we installed brand new Hayward Pump, DE Filter, Multiport valve, 2 inch PVC pipes to replace our very old Waterway pump and PAC FAB DE filter. While this is our 4th season as pool owners, I would still consider ourselves newbies because this is our first year of doing everything by...