DE getting INSIDE grids

[CarlD]

I'm not the DE filter expert but I am guessing it seems one of 3 things is going on:
1) The grids ARE old and all need replacing.
2) Something is redirecting DE laden water inside them from an unexpected direction.
3) The pump's flow is beyond the filter's rating--too strong.

[showtime]

SOLVED!

Last May I had a new multiport valve installed by an unnamed national pool supply company. They installed the wrong multiport valve on my DE filter. They put a multiport valve on that was for a sand filter instead of a DE filter. Essentially what was happening was the flow was completely backwards - pushing the water through the inside of the grids, rather than sucking it through the grids and then back to the pool. They have stepped up and are going to replace everything to include the multiport valve, entire grid and manifold system, couple bags of DE, and are even throwing in a LED Colorsplash bulb as my light had burned out. No charge of course, and what a relief to learn that I'm not crazy (at least when it comes to pool diagnostics).

Thank you!

[PoolDoc]

. . . membership updated.

Glad you solved your problem!