GE Grow Light LED with Balanced Light Spectrum for Seeds and Greens is designed to fit your plant's growth stage. GE's Grow Light uses a balanced spectrum with a red: blue ratio inspired by best practices of professional growers. The balanced spectrum allows not only chlorophyll but also other plant pigments to optimize their light harvesting. Compared to typical purple grow lights, the light features high PPF or Photosynthetic Photon Flux to provide more light for photosynthesis and growth. The white light appears more natural to the human eye, so you can appreciate your plant's beauty and spot pests or discolorations to help keep your plants healthy.