Philips MH 400W HPI – T E40 lamp Request Quote Category: Lighting Tags: light, metal halide, mh lamp, philips MH (metal halide) lights are generally used in the vegetative stage of growth (when plants are young and growing just stems and leaves). Related products Open Channel T5 14W 4000K+ 2X T5 Fluorescent G5 14W Cool White (Combo)Read MoreRequest Quote PHOTOBIO Advanced Quantum PAR MeterRead MoreRequest Quote 1.2mx2.4m Light lifting systemRead MoreRequest Quote