Quote Originally Posted by LIP
MH [Metal Halide] is a blue spectrum light used in the vegative
You mean vegitative? lol, i love correcting know-it-alls! haha:dance: (no offence by that)
s12fever Reviewed by s12fever on . Which light first? I'm looking at buying a light which comes with a red and blue bulb. Which bulb works best when? I mean do I use the red first or the blue? And why and which will work best at what stage of growth. Rating: 5