The Lumenlite 400w Metal Halide Lamp is a vegetative stage, growth spectrum lamp which has been optimised to run with an Adjusta-Watt Ballast.

• Metal Halide lamp produces blue light for vegetative stage
• Optimised for high-frequency digital ballasts, like the Adjusta-Watt
• Incredible level of useable plant light – PAR of 300 umol/m2/s
• Low THD (total harmonic distortion) when paired with other Lumenlite lamps
• No dedicated MH ballast required
• Optimised for use with your Adjusta-Watt ballast
• Fits standard E40 screw socket