This superplant CFL (low consumption) bulb brings to the plants a complete light spectrum which provides an exceptional result in growth phase. This is called a 100% PAR spectrum. (100% assimilated by the plants). The CFL SUPERPLANT bulb is perfect in small spaces because it gives off very little heat. It can be placed very close to the plants without risk of burns. It is an ideal replacement for MH bulbs . Its spectrum produces an intense light close to natural light. CFL SUPERPLANT, ADVANCED STAR bulbs can maintain a phenomenal luminous flux approaching 75% after 15,000 hours of operation until the end of their life, unlike sodium and MH bulbs which show a dramatic deterioration in lumen production after only 3000 hours of operation.