So i noticed today some dirty water was coming through from my jets. I then took apart my filter and noticed 3 of my DE grids had holes in them. One of them almost a 1/2 inch in size. So I know I need to replace the 3 grids, but my question is should I replace the other 5 while I am at it? I know the grids haven't been replaced in 10+ years. What do you all think?