This article was originally published on the Marijuana Patients Organization site on January 31, 2012.
I have always bene doing 18 hours but know some people that have always been growing for 24 hours all day long so should i do 24 hours to? What do you guys do?

I do 24 hours and get bigger crop at the end
18 is all you really need
18 hours
18 hours is all I have done for 10 grows now.
18