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A patented arc-tube HPS bulb optimised for high photosynthetic efficiency, maintaining strong output throughout its rated lifespan.Feature HighlightsPatented Arc Tube Technology — Sylvania's arc tube design delivers industry-leading photosynthetic efficiency.95% Lumen Maintenance — Maintains 95% of output at end of rated lifespan.High PAR Optimisation — Tuned for strong photosynthetic performance.SpecsPower600WVoltage400VLumen Output90,000 lmEfficiency150 lm/WCompatibilitySuitable for standard or supplementary greenhouse/grow room HID setups.

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Produced by market-leaders Sylvania, the Grolux HPS bulb is a highly popular choice in grow rooms across the country, known for its high light output and consistent performance.Feature HighlightsDual Spectrum — More focus on orange and red to enhance flowering, with added blue light making it suitable for the vegetative phase too.Patented Arc Tube — Sylvania's patented technology delivers industry-leading photosynthetic efficiency and reliable starting.Wound Ignition Antenna — Ensures ultimate starting reliability throughout the lamp's life.SpecsPower600WLumen Output90,000 lmColour Temperature2050KFittingE40Average Life10,000 hoursCompatibilityScrew firmly into the E40 bulb-holder of your reflector. Ensure ballast wattage matches the lamp wattage exactly. Allow the lamp to cool before removing from the holder after use.

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