Do you think Germans are Nazi's? Do you know what Hitler did to Germany? What he did to German people? How he used propaganda against his own people to get them to do things? And if they didn't follow those rules do you know how them and their family line was punished?
Do some simple history...
First of all you may want to give more info on your grow setup so that you can receive better answers from more knowledgeable people than myself. Also sometimes you can figure out these things for yourself. here is a a good link make sure you scroll down to see OmegaVermelho's comments as well...