What is the lifespan of HPS grow light
HPS Grow Lights Best hps grow light or High pressure sodium lamps is a High intensity discharge (HID) form of lighting that is commonly used as indoor grow lights for hydroponic production of plants, flowers and vegetables. The HPS light operates when an electrical current is run through an arc tube that has been filled with a gas. In this case the gasses found within a HPS globe is a mixture of sodium and an inert gas Xenon. The Xenon is used as a starting gas in the high pressure sodium lamp. The current and temperature increases in the arc tube until it reaches a high pressure operating state. High pressure sodium or HPS lamps have a higher efficiency than the older style of metal halide or mercury vapour lamp, reaching around 150 lumens per watt or 90,000 lumens for a 600w HPS lamp and around 55,000 lumens for a 400w HPS lamp. HPS lamps have a spectral range from 570nm up to 750nm which are the yellow, orange and reds. With some versions of the HPS lamps they have been tuned mor...