no offense but how do you have 200 some posts and not know the answer to that question? How do you have clones and not know the answer to that question? I'm going to catch shit for saying this but I just gotta know .....
The answer of course is no. 12/12 induces flowering. 18/6 mimics natural daylight hours which keeps them in the vegetative state. 24/0 will do this as well