Hey @Herbies Seeds I was going to place an order and was wondering if there was a different promo code for check out? The "420MAG" code from the sponsor banner page says "invalid or expired".
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I wouldn't exactly call it organic, but when I ran FF grows I would indeed use auto parts store battery acid for my ph down. A single carton of acid will cost you about $6 and it will last a long long time. To use it, get a gallon of distilled water and remove 1 cup. Carefully replace that with one cup of battery acid. This 15:1 dilution works at just about an identical rate as the expensive store bought pH down product and it is much much cheaper.
Hope everything is going well Buddy.