Well you can switch to 12/12 any time you want. The longer you veg the bigger your plant will be. Plants double in size after switching to 12/12.

The plants look good but like they look to be streaching. Put your light closer to them. It looks like a MH glow..you can go pretty close w/ a MH depending on watts. .

As far as the brown tips and drying..there are many things that can cause that. My guess would be mag. diffeciency. That always starts in the tips.
The White Snoop Reviewed by The White Snoop on . how long should i veg these have been going 24 hrs for 22 days. is there an average growth or time to switch to 12 /12? also some of the leave tips are browning and drying out, i changed the water and nutrients any other ideas? how do they look? Rating: 5