CMH lights seem to very popular because of the improved spectrum over MH and HPS and the ability to use one bulb for the entire harvest. Problem was: no digital ballasts.

Seems Philips just came out with a digital ballast (no link) designed specifically for CMH. Will try to find it again.

Even better, Accendo Electronics just announced a dimmable (Glo Green)digital ballast for CMH. Accendo Electronics â?? GloGreen Digital Ballast (DHID) Products

No pricing as of yet. What excites me about this is the ability to vary the output. Let's say I get a 250w unit which is too much heat for my current space, yet a 150W unit is too little. I could run it at 190W in the summer and 220 watts in the winter. Also could run it at 130 watts for seedlings.And if I later get more space or better cooling, I can run it at full power. Great power savings and customization.

One light to do all. Of course this special feature will not matter very much for large or commercial grows.

The ballast + CMH puts out an impressive 116 watts per lumen.

I believe they are looking for testers!

FYI, I am not associated with this company.
RackitMan Reviewed by RackitMan on . Ceramic Metal Halide News CMH lights seem to very popular because of the improved spectrum over MH and HPS and the ability to use one bulb for the entire harvest. Problem was: no digital ballasts. Seems Philips just came out with a digital ballast (no link) designed specifically for CMH. Will try to find it again. Even better, Accendo Electronics just announced a dimmable (Glo Green)digital ballast for CMH. Accendo Electronics â?? GloGreen Digital Ballast (DHID) Products No pricing as of yet. What excites me Rating: 5