How do you correct the ph of Rockwool.

Subliminator

Well-Known Member
I have heard you soak it for 12 hours in 5.4ph water. I guess you just use ph up to raise it to 5.4. Will this put the ph of the rockwool at 7? Do you think you could use rainwater which has a ph of 5.6?
 
Never tested, never worried, never had issue :) I soak in 5.5-6, and then keep moist with 5.5-6, never had an issue or sign of ph imbalance.
 
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