1000W lamp systems power the professional 600W 400V EL (electronic) lamps. These lamps have an improved spectrum, the highest PAR light output and the best light maintenance (>95% PAR light over one year of use). Being the most efficient horticultural lamps available and the only lamps specifically developed for electronic ballasts, this is the lamp of choice for Dutch professional greenhouse growers. The 1000W grow light system has no acoustic resonance and has up to 8% more grow light. It is available as a full fixture or as a remote ballast and can be adjustable to 600/660/750/825/1000/1150 watt. It has very low heat dissipation and optimal cooling.