Are HPS grow lights safe?
What is a HPS grow lights? Before we look at some of the best HPS grow lights in the market, it is good to understand what they are first. HPS stands for high-pressure sodium. HPS light comes in the form of a narrow arc tube held by a wire frame. HPS light contains xenon gas, high-pressure solid sodium and mercury. How HPS light works HPS light works by using ballast, which creates a pulse that stirs the gas in the bulbs or lamps. The ballast first ignites the xenon gas, which in turn generates a flow of electrons. The electrons heat up the arc producing a pale blue light. After this, the arc vapors mercury into gas generating a deeper blue color. Finally, the sodium gas vapors turn the arc into a yellow color spectrum. These are all the colours that provide lighting effects that influence the growth of the crops. All the colours have different wavelengths depending on the gases inside them. Majority of the HPS bulbs are ideal for the FLOWERING phases of the crops because of their ora...