I've been using organic lemon juice (not from concentrate) I get at the same health food store I get my unsulphured blackstrap molasses at, but I grow in dirt...tablespoon per gal for me and it does just fine. (from 7.1 to 6.6 ph) I only need ph down....Coffee works very well also! Also about one coffee scoop per gal. but this would be very messy in a hydro grow! Brewed coffee grounds do not work, however, I guess the acidic effect gets brewed out by Mr. Coffee! Fuggar be trippin I guess... There is nowhere local for me to buy the expensive (or cheap!) plant type, so I have to improvise. Citrous peels (zest) will work in soil also, btw. And none of it adds anything to the final product taste that I can tell. I was actually hoping for some lemon/coffee tasting herb...LMAO! I cannot tell you if any of these are cheaper to use than what you have been using tho. Too stoned atm for mathematical calculations!...:stoned:

ANYBODY BUT THE STEELERS! So, GO PACKERS! LOL!