When it's a third to a half of the height you want your final plant to be.
IndyMed Reviewed by IndyMed on . when do i change the light cycle? please help Hi, this is my first time growing. I have a bubba kush clone, in my closet, that is about 2 weeks old. It is around 8 inches tall. I have it on 18 hours light and 6 hours dark. When do i change it to 12 on and 12 off? Here is a picture of the clone as well. Thanks for the help. Rating: 5