ok now that were on the subject. i have 2 clones that have red stem. they started in rockwool, and are now in soil. i havent given these bitches nutes yet. i use tap water, but i boil it and let it sit for 24 hours.
so if the stems are red i need ph down? like lemon juice. or do i need to make it go up. i know...get a ph kit.