| Baking soda is a buffer. I think it's in the 8.2-8.4 pH range. If you're pH was high, adding baking soda should have lowered it to it's buffer range.
I'm very not familiar with muratic acid so I can't comment very much however I don't know if using acid in conjuction with baking soda will lower you pH
Are you using a test kit from last season? Could your kit be off? Sorry I can't be of more help.
-Dan |