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Is grow light equivalent to direct sun?
The light intensity of a grow light isn't as intense as the outdoor sunlight these plants prefer, but better than the watered-down sunlight received through a window. Providing 12 to 14 hours under the grow light equals about six hours under direct sun.
Can room light replace sunlight for plants?
Researchers can successfully grow plants using only artificial light in growth chambers. But sunlight is best for most plants. It's generally more intense than artificial light, and it's pretty equally distributed among the different wavelengths that earthly plants have evolved to like best.
Are grow lights good for humans?
UVA and UVB radiations are present in the sunlight and the light produced by LED grow fixtures. These two types of radiation are dangerous to humans. They can also cause various skin diseases, including skin cancer.