yup. and don't let anyone cry about "would you drink that?! it's for car batteries!!" fuck that, no one would drink an acid like that period. it's the most stable pH buffer I've ever used, and it has added benefits such as influencing terp profiles in late flower because of the added sulfur ions. Whereas GH pH down is a combo of phosphoric and citric acid, and I don't feel is as stable.i gotta agree with @Badchoice lol, love you username dude. bad choice but i've seen you only give honest true feedbacks. lol!
why not just use sulfur acid/battery acid and call it a day? you'll have allot more stable ph and you don't have to worry about the amount of bottles you are dealing with.