a CMH is 30% of input energy is converted to light. a 301 based LED will convert 40% of its input energy to light. just check the data sheets.do your research. ther are a lot of LED fundamentalist on this site making exagerated claims about lights and a lot of "bro science" on this site but a lot of good sciene online.for example they claim LEDs are full spectrum but the produce no UV and only a narrow band of blue. plants ca adapt to any kind of light but if you look at the absoption spectrum for plants grown in natural sunlight you will see what plants really like only CMH and horticultural T5s can come close to thisThat is negligible. So do you run CMH or LED? These are things I'm curious about when it comes to LED VS CMH. I'm looking for what works best ot worried about cost. But UT if it's negligible then I really don't see the reason in spending the extra cash on LED just to be the cool kid on the block. I want quality first then production then cost to own & use comes into play.
Please anyone feel like chiming in feel free. I've asked a lot different questions proba KY should of made new threads but trying to keep things in one area. Thanks for your time.