Quote Originally Posted by SittinStoney420
hey mand, do you know about colors. and if you do would an MH bulb be blue or red. I have both MH and HPS but im trying to figure out what would make denser, more resinous buds and i read it had to do with color. --Not trying to hijack your thread sloppy just a quick question--
MH has a blue spectrum and HPS has red. Use MH for veg and HPS for flower.

I actually used both simultaneously for veg and flower. Seems to be working well.

Hope that helps