Testing chemical level for newb

[Watermom]

In one of your posts above, you stated that you had a lot of DE on the floor of the pool. That should not be. If that truly is the case, then there is a problem with your DE filter. That needs to be the first thing that is addressed before you add more DE to an apparently non-working filter.

[consoleman]

Im not sure its DE. The guy who cleaned it before I bought the house left a note on the door that said that. The psi was not low enough so my guess is that it hasnt beened backwashed and re DE'd recently. I am backwashing and cleaning the filter today.