My DE filter grids need to be replaced; however, I have decided to wait until next season to replace them. I don't want to install new grids then have them damaged over the winter. The current grids do not filter very well. DE does not stay coated on the grids. I find myself vacuuming up DE that is blown out the returns along with other small debris that is not trapped by the faulty grids.

I started using a skimmer sock to trap as much debris as I can before it reaches the filter. When I vacuum it is very frustrating that about 50% of what I vacuum comes out the returns. As a short term experiment, I was thinking of trying a skimmer sock or panty hose on the pump basket to trap debris that is vacuumed.

Has anyone tried this? Is this a bad idea?