What Makes A Good Light?
Plants need a lot of light to grow
The light intensity plants require to grow vigorously is about 200 times more than humans need to see indoors. Grow lights must be powerful enough to deliver high intensity light and efficient enough to do it cheaply and with minimal heat output.
Light spectrum or color of light
Plants require a 'full spectrum' light which has the right amount of each color spectrum to grow healthily. Grow lights must deliver the correct proportions of blue, green and red light the plants need.
Each plant should get the same amount of light
The grow light should spread the light uniformly over all the plants in the grow area. This ensures all the plants reach their potential yield.
Grow lights must be tough
Grow rooms and grow tents are hot and humid environments. Grow lights must run for up to 20 hours per day and last for years. They must be designed and built to last in tough conditions.