Response to I recently bought all new filters and they ruptured after two weeks. The starting psi is 10 and rises to 11. I don't understand why the filters would rupture at such a low pressure. My setup is simple. Pump 3/4hp > Pentair 261152 multiport > Quad 60 filter (top inlet) > filtration > Quad 60 filter (bottom outlet) > pool. Do not backwash ever and I added 6lbs of DE when new filters are added.

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