Do those LED plant fill lights on Taobao really work?

It works. Plant lights are not high-tech. There is no difficulty. It's just a matter of the ratio of red to blue. Different plants and plants at different growth stages have different requirements for red light and blue light. People can also give different red light and blue light to plants according to their own needs to achieve their own goals. Plants have red Emerson effect and blue light effect. Using it well can achieve different purposes of affecting plant growth. Red light and blue light are not difficult to produce. The subtle differences of each plant lamp can only be the width, intensity, life span and cost of the broad spectral band of red and blue light. These differences. It's not necessarily a world apart.

The above are personal opinions and are for reference only.