If a plant starts to show it's pre-flowers does that mean you cannot top them any more? Or is it ok to top them?

Also, if you started a bunch of seeds at the same time and only two are developing pre-flowers, is that bad? Or does this mean they are just quick and the others are slower?

Is it a good idea to switch to 12/12 once this happens?
bugmenot2 Reviewed by bugmenot2 on . Some questions If a plant starts to show it's pre-flowers does that mean you cannot top them any more? Or is it ok to top them? Also, if you started a bunch of seeds at the same time and only two are developing pre-flowers, is that bad? Or does this mean they are just quick and the others are slower? Is it a good idea to switch to 12/12 once this happens? Rating: 5