Lucagrow GE HPS 400 Watt Bulb - 2000K for optimal plant growthLucagrow GE HPS 400 Watt Bulb 2000K for optimal plant growth Lucagrow GE HPS 400 Watt Bulb 2000K The G. E Lucagrow HPS lamps offer a compliment or complete substitute to natural light. The High Xenon Gas Fill in the lucagrow lamps give up to 20% more light than standard high pressure sodium lamps and have a long life of up to 28,500 hours. The Lucagrow lamp maintains 90% light output over the life of the lamp and is fully interchangeable with other