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Rockwool has a neutral pH of 7. Roots in an inert media prefer a pH of 5.5-6. Soak the rockwool in a 5.5 pH solution for a few hours before use.
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Rockwool has a neutral pH of 7. Roots in an inert media prefer a pH of 5.5-6. Soak the rockwool in a 5.5 pH solution for a few hours before use.
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