I did I did!

"Ways around the ph..use lemon juice or muriatic acid or buy the ph down in powder form and add your own water. I just bought a 35lb box for 16 bucks. I know that had to be a misprint which is why I wasnt going to let that deal go, but ordinarily it's still a better price then the liquid form."

Holy Mackerel!
BOTD- Please disregard that advice!
Agricultural PH down is Phosphoric acid.
Ask for it by name and it's dirt cheap.
(Actually not all that expensive as a product either)

PDT - You overpaid for the bisulphite.
'bout 4 times what it costs as a generic.

It's for swimming pools and spas.
Quite unsuitable for horticulture.
Suggest you buy a spa.

HCL is also unsuitable.
And lemon juice is variable in it's PH so titration is problematic.

Giving advice that is not rock-solid is no favor, my friend.
Someone might take it.

Aloha,
Weezard