400 Volt / 1000 Watt HPS Green Rooster lamps maintain their efficiency and light output for much longer than standard HPS lamps. In fact they will normally last at least a year before they need to be changed out. It should be noted that normal HPS lamps and 400 Volt Pro HPS lamps are NOT interchangeable with different ballasts.

Green Rooster 1000 DE Bulb HPS 400V

$74.93
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Same technology as Ushio, Philips, and Hortilux bulbs at a much better value! 

400 Volt / 1000 Watt HPS Green Rooster lamps maintain their efficiency and light output for much longer than standard HPS lamps. In fact they will normally last at least a year before they need to be changed out. It should be noted that normal HPS lamps and 400 Volt Pro HPS lamps are NOT interchangeable with different ballasts. 

- Double Ended HPS Bulbs degrade slower than traditional single ended bulbs. In fact, after 10,000 hours double ended bulbs will still output approximately 90% of their original intensity.  

-Double Ended HPS Bulbs are more stable than traditional single ended HPS bulbs, and this allows them to have a 10% increase in light intensity and PAR output over traditional single ended HPS Bulbs.

-Double Ended HPS Bulbs emit more UV and IR light than traditional single ended HPS bulbs, increasing the potency and essential oils of oil producing plants.