So for my 48 hours of darkness before I hang my plants is putting them in a dark closet with 70° about 50% humidity good or do I need to have a fan moving air
All that looks good but you do need to have a fan in there moving air around. Even if it's just a small fan moving a small amount of air. Just don't point the fan directly at the plant matter! Hope this helps Happy growing! 🤟😜