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 PHOTOBIO•TX2 LED, 800W, 200–480VRead MoreRequest Quote Philips HPS 1000W SON-T E40 lampRead MoreRequest Quote Open Channel T5 14W 4000K+ 2X T5 Fluorescent G5 14W Cool White (Combo)Read MoreRequest Quote