Thanks for the replies.

We have had a lot of rain (and snow) here over the off-season, but we had a lot last year also and I didn't see the same numbers.

I did replace my reagents but after I already hit the pool with about 16 lbs of baking soda. My TA was at 190 by the next day (with the new reagent) and the PH was 7.9.

I've been hitting the pool with small amounts of Muriatic Acid all week, and I have a small pump tied up in the corner of the pool doing some circulation. It's also breaking the surface of the water to hopefully provide some aeration.

Last night the TA was down to 140 and the PH was down to 7.2.

I guess I can't rule out the the reagents were faulty, but they were new last summer and I keep them in the house during the off-season.

My plan is to get the TA down to 100 then work on bringing the PH up to normal.