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Monty, It runs around 7.0ph. We add the aluminum sulphate every year to get it down to where it should be and by the next year it's back up. Tony

Also from BYC. Up here in NW pa.

BJ, Are you planning on vacationing in Pa. this summer?? lol Tony

Hi, I'm asking if anyone might know of a safe substitute for aluminum sulphate. I wish to lower the ph of my soil for my blueberry plants. Also, is there a better time to apply a ph lowerer?? Thanks for any help, Tony