I'm sure this has probably been hashed out in the past, but I can't find relevant info since the server crash.

I am tired of wrestling with leaky grids each and every season, where the DE finds some microscopic hole or gap and promply blows back into the pool. Eventually I get it corrected, but always after a frustrating investigation.

So I'm wondering if it is a better idea to buy a new sand filter or possibly a new DE filter altogether. The existing filter is quite old, although around half of the grids have been replaced in the last 3 seasons.

I know that sand does not filter the smallest particles, but other people using sand seem to have no issues.

Also, if I do buy a new one, how do I correctly size it to work with the existing 1hp Hayward superpump on a 35,000 gallon inground?