Thanks for the info Watermom. I added 3 gallons of bleach (all that I had) and two boxes of Borax.

Here are my results from this morning:

FC:13.0
CC:1.0
PH: 6.8 to 6.9?

Also, I cannot fully get rid of my Pool Frog as I still have 2 Chlorine backpacs that I purchased a while back and they are not cheap at 21 bucks a pop.

-Should I just remove my mineral pac that surrounds the chlorine pac or ride it out till end of pool season in September?

Other questions:

- Do I continue to run my pump a full speed or can I cut it back to the slower mode and run it 24/7 like I usually do? Or can I just run it at night? Want to save energy and money, if possible.

- Once I lose less than 1ppm over night, how often will I have to add bleach and how much? Seems like it could get expensive, no?

- How many more boxes of Borax do I need to buy? Two boxes didn't seem to make a dent.

- My pool is 28' round and 54" deep. I was told by someone at the pool store that I had 18000 gallons, but don't those measurements equal 21,000+?

Gracias!!!