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Hayward Pro Grid De Filter Psi


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Whenever I break down my DE filter and hose off the grids and then reapply the DE, my pressure is around 12-15 psi. At 25-30 psi, the filter is clogged and will not allow hardly any flow. The problem with backwashing is that it dumps your DE. It also does not do a good job getting the junk off your grids. Typically, I will break down the DE filter twice before the Summer pool season gets going. The sediment that ends up in the pool during the Winter is what gets clogged in the grids the first time. Then, as the pool water gets warmer, the algae starts to clog the grids. When that happens, backwashing will not get rid of the algae. You'll need to break down the filter and hose off the grids. After the two grid cleanings, I am good to go all Summer.

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