I am growing in 4" rockwool blocks. Would it be a bad idea to cut 4" squares of aluminum foil and place them on top of the rockwool blocks(with a hole in the middle for the stems)?
rimbaegeus Reviewed by rimbaegeus on . Foil Rockwool covers? I am growing in 4" rockwool blocks. Would it be a bad idea to cut 4" squares of aluminum foil and place them on top of the rockwool blocks(with a hole in the middle for the stems)? Rating: 5