Question

Does fluorescent bulb act as grow light?

Answer 1

Halogen lights can also provide full-spectrum light, but like incandescents they put off a lot of heat and are less energy-efficient than fluorescents. Horticultural grow lights are generally packaged in tubes for fluorescent fixtures.

Answer 2

Fluorescent bulbs contains gases like fluorine and neon which elaborate the amount of light emitted by the bulb. The kinetic energy in the gas molecules increases which results in such activity. There are incandescent light bulbs which can act as grow light. They don't contain tungsten.