What are CMH Grow Lights and How Do They Work?

For those who might not be familiar with CMH – it’s essentially one of the best High-Intensity Discharge Grow Lamps or HID for short – on the market at the moment. In terms of PAR Spectrum – Photosynthetically Active Radiation – it’s fairly close to the natural PAR of the sun – making it an exceptional “rounded light”. Of course – the CMH also has its disadvantages compared to other light systems. For example – HPS is “cheaper” on initial installation costs and produces slightly more punch when it comes to flowering stages – however, these “advantages” wear thin over time when compared to the efficiency of CMH.