Recently had the pool sandblasted and replastered, so decided that I should give the filter a clean. I have done this before and never had a problem. DE filter. Took out the grids, cleaned them down just like the WONDERFUL tutorial here. Grids are in great shape, no tears, no fraying. When I put the grids back together with the "thing" that goes on top of them (I have no idea what to call it - the thing that the water goes through to get into the grids), it never seemed to sit as pretty as I wanted it to. Couldn't find a particular problem, just not as tight as I thought it should sit. Decided I was being overly perfectionistic and moved on. But today I discovered that I have DE blowing into the pool. Not a lot, but some. I am guessing I didn't have the thing seated well enough after all and will break back into it. Is there something else that I should be checking? A rookie mistake that I might have made? A piece that always breaks that I might have missed? A trick to getting everything back into place perfectly?
Thanks for any advice!