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Thread: Diy blackwater
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Old 01-23-2013, 10:27 PM   #12
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i cant really answer that. for me, less than half a point. for you, maybe a full point or maybe not at all. its not easy to predict how well blackwater extract/peat/driftwood will lower your ph.

i have had peat lower my ph quite a bit in one city but not at all in another. a lot has to do with how your water is buffered.
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