Put a combination light with a flowering light or a blue spectrum, you can dial right in to your light spectrum with the QG Modular LED System. All QuickGrow design extendable, modular LED grow lights ship with the hardware and connection cords needed, you can connect up to 6 lights together, just plug and play.
You would use a specifically blue light for plants when you want to boost chlorophyll production and generate strong, healthy stems and leaves. Red light is responsible for making plants flower and produce fruit. So if you want to give seedlings or young plants a fantastic start in life use a blue light, similarly if you have a plant that is not doing very well, try it under a QuickGrow Blue Spectrum grow light and watch it start to love life again.