sand filter vs cartridge

[Watermom]

Also note that when you add the DE, the pressure may not rise instantly. Mine takes about 20-30 minutes. So don't add more if you don't see the rise immediately. If after a half hour or so you don't see a 1 psi rise, then add a little more.

[jkane2007]

Thanks I will give the DE trick a try this weekend.