If you are growing plants that produce flowers or fruits they will require different types of light radiation at different stages and SunMaster Dual Spectrum Lamps are perfect as they provide a vibrant red spectrum for flowering plants, but they also have added blue which enables them to be used for the growth stage as well.
Young plants can be raised under these lamps and they can be grown to full maturity and harvest without having to change your lamp at all from beginning to end, providing a low cost alternative when compared to buying a metal halide lamp and a high pressure sodium lamp together.