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Lowering pH
I'm using tap water for my DWC buckets and letting them sit overnight to get rid of excess chlorine. But, my pH is around 7.5 and unfortunately I don't know of any hydro shop around here. I've checked out local stores that have garden sections but no pH up or down stuff. The only thing I can think of is using vinegar. I believe it has a pH of 3ish. Would it be safe for the plant or should I keep looking around?
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