125 watt Growlight fluorescent bulb. Burn one or more by themselves for bloom light. Low heat makes it a perfect choice for high temp areas. 2700 Kelvin color.Screws into common mogul base sockets. Puts out about the same light as a 175-250 watt metal haliade 2700 kelvin temperature color output. Great for bloom growth.
The ballast must be disconnected and and wired 120 volts to the bulb. You can not just screw this bulb in to your existing ballast powered reflector. You will blow up the lamp. HPS / MH bulbs take higher than 120 volts to fire.