:wtf:

Uhhh....

I think she meant 18/6 hours of light/dark, not 18/24 which would be 18 hours of light followed by 24 hours of dark.

When the plants hit their second set of true leaves you can move the light closer to them. After that point more light = more growth.

There is lots of books in a link in my sig. I recommend reading as much as possible as soon as possible, it's well worth it.