LOL. sorry had to laugh. If you are planning on switching it to flower 12/12 after 5 days of growing. They may die or produce a very small bowl. Keep them in veg 18/6 or even 24hr light while in vegetative state. Then switch to flower when your height is right. Would not suggest switching straight from 24hr light to flower cycle. Gradually bring it down to 18/6 then to 12/12 Keep in mind that they will get a little bigger depending on strain and your set up. What is your set up by the way? Look in the GROW FAQ this will help you a lot. You do not need to ask all these questions and they could be all answered by reading the FAQ. Save your time and everybody's as well.... READ the grow faq. If you do not understand then ask questions, and maybe you won't look so silly and have nobody but me respond.
Goodluck LeMskunK