This kit comes with the Prism Lighting Science 315w Ceramic Metal Halide CM 120/240V Ballast, the Phantom 315W Ceramic Metal Halide CMH Reflector, and your choice of the Philips Mastercolor CDM-TP Elite 315W CMH Agro Lamp T12 - 3100K or Philips MasterColor CDM-TMW Elite 315W/942 CMH Lamp - 4200K. The 3100K lamp is a flowering, budding spectrum lamp, while the 4200K lamp is best as a propagation, vegetative spectrum lamp.
