Par Pro? 1100 watt Hyper Arc High Pressure Sodium lamp delivers a staggering 2,380 ?mol on the Galaxy? 1000 watt turbo setting! The Par Pro? Hyper Arc lamp has the ideal 2000? Kelvin temperature for fruiting and flowering. The industrial construction of the Par Pro? Hyper Arc allows the lamp to exceed all micromole levels currently offered. With attributes of long life, reliability and high efficacy (over 150 LPW) this lamp is an excellent choice for indoor horticulture purposes.