#toplanet

As far as I can see, at the same level power, LED's luminous efficiency is 90Lm/W, while HPS is 32.27Lm/W, So LED's LE is about 2.8 times of HPS. So a 600-watt HPS lamp is just getting the same luminous as a 215-watt LED, so you will save more money on the lamp and power consumption. In the...