how much light

Howdy yall, my friend asked me to post this for him. He is a medical patient, and so am i. But he is not very "Technologically oriented" so to say; anyways. He is wondering what he could possibly pull from 20 dried plants (Well bellow the the legal limit) Topped and lollipoped; flipped into...

im wondering how much area my 600w hps will cover, take a look at the pics and see if you think it could handle covering about half of that tent? or even better question! can a 600w hps cover that whole scrog screen efficiently? its 45inches long and 40 inches wide. thanks in advance!