I wouldn't!!
Sounds good but that stuff is real strong, it is for treating thousands of gallons of water at once not a gallon at a time. I use a tablespoon of vinagar per gallon to bring down my ph! and it is more natural not a pure acid like pool chemicals.
Jerry Garcia 2007 Reviewed by Jerry Garcia 2007 on . ph down for pools/spas... ...is it cool to use this to adjust water? ..... Rating: 5