Hello, i recently retired my Pentair 2000 which was a great filter with a Pentair FNS 60, upon adding DE i noticed some returning into the spa, which i understand can be normal initially. A few days later i was skimming the pool, which by the way was looking great, when the pump turned on and i noticed DE still returning to the spa, i noticed it does it every time the pump starts initially and it is not visible at the pool returns. Yesterday i took the filter apart, cleaned it, inspected all the grids, O-rings, manifold for anything obviously wrong and did not see anything wrong, i added DE and let it run for 12 hours. This morning the pump started up and I saw the cloud of DE in the spa again, though it did not look as much as before i took it apart (i think). Any insight would be appreciated. Oh! is it normal for DE to shoot out of air relief valve once the air has been discharged? When the water dries up on the ground there is a lot of DE and the water looks grey when it shoots out, my old filter did not do this.