LED lights have become popular with indoor growers; they use relatively less power, emit less heat, and can deliver only the wavelengths your plants need to grow.

Red Wavelength LED Grow Light
LED lights, or light emitting diodes, have long had many manufacturing and display uses and they have now been adapted for indoor growing. LED’s are effctive as grow lamps because they have a low energy usage, long lifetime, and small size, and do not give off much heat. They can also be designed to emit precise wavelengths of light so can be catered to any plant or herb you want to grow. This makes LED’s more efficient because there is less wasted light compared to other bulbs and you can be sure your plants are getting the light they need.
LED lights can be found in high and short wavelengths so can be used to effectively throughout the different growth cycles of your crops.