Yodaweed
Well-Known Member
Core coverage on cmh is about 3x3 max, 2x2 cmh coverage is beastly. You gotta realize when the light is lower than 24 inches those numbers go up significantly. This guy tested his light at 12 inches, if he put his at 24 inches his numbers would go down significantly.When you move closer you lose light spread... Still not making a valid point. If 500 isn't enough to grow then a cmh has a 2x2 flowering footprint
Source :
Question:
Hi, what is the footprint of this reflector?
Answers:
The Phantom 315w Ceramic Metal Halide (CMH) reflector coverage area is about 4' x 4' during vegetative growth, and 3' x 3' for flowering phases. This is if this is your sole/primary light source. This light could even be used in a space as small as 2' x 2' comfortably. The 4' x 4' and 3' x 3' are more of a maximum footprint. Often these CMH lamps are used in between larger more powerful lights to give a better well-rounded spectrum since CMH's have such a wider spectral offering than traditional HPS and MH lamps.
If you are here to argue with me i'm not gonna keep on back and forth, either start showing some sources and have something intelligent to say or get ignored.