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- This topic has 1 reply, 2 voices, and was last updated 7 years, 10 months ago by .
I need to decrease the pH in my growing media
I bought the Rapitest pH Meter but the only number I can read is 7 (doesn’t matter which type of growing media I test. I have different results with the lab pH meter).
I need to reduce the pH in a growing media. Any suggestion?
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