Negative Positive
Title: Great filter one flaw
Review: This a great quality filter and is very simple to maintain. It has one annoying flaw though. It has a flapper inside to prevent the DE from going back to the pump with it is off. The flapper rattles loud enough to be annoying. I removed the metal weight on the flapper and it is silent now. A minor amount of DE does flow back when bumping the filter, but not an issue though.
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