Originally recorded July 7, 2019.

This spring, before opening the pool, I replaced the filter grids in my D.E. filter. After opening the pool to find it swamp-like, I went through copious amounts of D.E. and backwashing cycles, sometimes backwashing twice in one day.

Did you know that backwashing isn't getting rid of all of the contaminants in your filter? Your filter needs to be opened up once or twice a season and internally cleaned to keep it working as it should. This video shows you how and what to do.

The filter depicted in this video is a Hayward D.E. 4820 model. Other Hayward filters should be very similar, other brands should open up in a similar fashion. The steps are the same, but your equipment may vary.

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