There is some green color substance starting to grow(?) on top of the rockwool by the stem on some of my plants. What is that? is it bad? If so, what can I do to fix it?
godsbackyard Reviewed by godsbackyard on . Green on Rockwool There is some green color substance starting to grow(?) on top of the rockwool by the stem on some of my plants. What is that? is it bad? If so, what can I do to fix it? Rating: 5