Yes, Watermom, I backwash once a day. It appears to be working fine now - since having it serviced and repaired. The pressure rises a little, not a lot, and then drops back down when I backwash.

Aylad, I use the test kit I got from Ben to do my testing. If I just need to stay at it, then I can do that. I just expected to begin to see some changes by now and thought I must be missing something.

I'm thinking of putting in a skimmer sock, just to see if that will help any, but I guess I'll just keep pouring in the bleach until it clears, unless anyone can see something I might be missing.