The CMH lamps have an increased efficiency in PAR/Watt compared to other forms of HID lighting. CMH lamps can be used as a primary veg light, a primary light for SOG applications, or a supplemental full spectrum light for large flowering operations. ; CMH bulbs have a broad spectrum of '' white''light. While MH lamps have mainly '' blue''spectrum light and HPS lamps have '' red/yellow''spectrum light being released, CMH lamps are considered to have a broad spectrum. This means that our CMH lamps has a more even spectrum output than any other double ended lamp being used for indoor growing. ; Specifications Lumens 100,000 Color Temperature 3100k CRI 90 Glass Size T32.5 μmol/s 1700 Caution: ;Our lamps ;may be used in a damp environment but cannot be used in wet an environment and outdoors. Caution: Due to the special design of the double ended bulb, please place the fixture horizontally before connecting to a power source. The CMH bulb could be damaged if the fixture is placed on an angle after power is on.