It's been a while since I had to replace the grids in my DE filter. My pool vacuum has been picking up a lot of grey/white fine particles which I assume is the DE filter powder that I put in the skimmer after backwashing the pool or cleaning the filter. I assume there's a hole(s) in the filter(s) and the DE filter is going right through it and out into my pool through the jets. Anyone replaced this themselves or have any advice. Last time I had a pool tech replace it but now I refuse to pay a pool tech to come out unless absolutely necessary.