Sparkling water - how?

[mshumack]

Thanks. I'll try a skimmer sock, although it seems odd that a sock would do any good because I would think whatever gets past the skimmer basket should still get stopped in the filter.
I not against trying. Are there any particular things to look for in a sock (manufacturer/brand, filtration size, etc.)? Or should I just get whatever the pool store has that will fit over my skimmer basket?

[waterbear]

Is it possible that you have a tine hole in one of your grids that is causing a tiny bit of DE to get back into the pool? It might be worth while to break the filter down and inspect it well. There might also be some bridging of DE between the grids or the grids might need cleaning. All these can cause filtering problems.