Yellowing is normal, its the nitrogen coming out of them to help promote rooting. I've also heard that cutting the fingers of fan leaves helps rooting as well. Good luck with your clones.

Puff
puff4twentynow Reviewed by puff4twentynow on . cloning question Sorry for the lack of picture evidence but i currently have 8 clones from a good female mother. They are all in 1 inch rockwool cubes in a propogator and have seemed to be doin ok for about 8 days now - have kept them under a 125w envirolight blue spec and spray/foliar fed them with a 6.5 ph water with superthrive and all looked fine till a few days ago!! Now all the leaves are starting to turn really bright yellow!! :( They all still look like they are alive - they`re not drooping into Rating: 5