Quote Originally Posted by Malsor
Yea? MH all the way? How does it make it more potent? Sounds interesting....I'll look into that, I heard plants grow triple in size once started flowering which means if I veg until they are 2' when their adults they will be 6' tall! If I make at least one ounce per plant I'm happy, especially if I can grow 8 at once.
I let my plants get to a foot tall before flowering and pulled 3 oz per plant. Imagine two feet before you flower.

It works due to the MH putting out more blue and also a bit more UVB radiation (despite the filtering borosilicate glass shell.) This increases trichome production and thus THC content versus other cannabinoids.

I've included two pics - the first one is of my (poorly-done and heavily-burned) red-dominant LED grow. Notice there's some frosting, but not much.

Second pic is under blue-dominant lighting. Notice how much more frosty it has gotten (and it even suffered the same burning.) it's about three weeks behind the red-dominant one on flowering, as well. had I not let it burn, odds are the entire plant would look like I tried spraying it with that glass grit crap the poor guys in southern UK get to increase their yield.