used rockwool
The last time I used rockwool was about 8 months ago and when I stopped, there were a few black
patches that looked like fungus or mold on the top. When I was done with my first batch of
habaneras and green peppers, I let the rockwool air dry and am now concerned that mold or fungus
may grow and destroy any chances of my second crop.
Can you re-use rockwool after its been dormant and if so do I need to be concerned about potential
mold problems?
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