... enhances vegetable growth, red promotes the stages of fruiting and flowering, suggestion : red 620-630nm, red 640-660nm, blue 450-460nm ... HPS300-400WVegetative Stage:14-16 hours/dayLighting Area10~15 M²Flowering Stage10-12 hours/dayLifespan50,000 HoursSizeDia 270mm x 60mmPackage Details580 ...