The Secret Jardin LED 42w Red light is a great alternative to High Pressure Sodium (HPS) lighting. The 42W LED lighting can be used on its on as Fruiting/ Flowering lighting or as supplimentary lighting to your existing set-ups. LED's are widely used as they have very low running costs, reducing your electricity expenses without reducing speed and quality of growth. LED grow lights emit minimal heat which is ideal to help regulate temperatures in grow rooms.