Ditto, phosphoric acid and a quart was $9.95. Considering I use 1/4 tsp per gallon to dial in my Ph, this doesn't seem too expensive to me. Maybe it's different for hydro growers.. but for soil, this is cheap.

My $0.02

:jointsmile: Farmer Rich
Farmer Rich Reviewed by Farmer Rich on . PH Down :smokin:Can someone tell me what kind of acid is PH Down or is there somethin that I could buy besides those expensive bottles of PH Down :stoned: Rating: 5