What does lumens, Watts or Kelvin (K) mean?
Lumens equates to the amount of light is emitted. Together our bulbs produce 6000 lumens. Watts is a measure of the electrical power required to run the bulb. Kelvin is a measure of temperature, as in 5100K or 2700K (this is the emitter temperature, not the actual temperature of the bulb itself), and it refers to the color of the bulb; 5100K being a blue light spectrum, and the 2700K being a red spectrum. Plants like a predominately blue spectrum during their vegetative growth and like red spectrum light during flowering. Together the 5100K and 2700K provide a dual, or complete spectrum, suitable for all plants during all phases of growth.
