by Jorge Cervantes
Metal Halide Lamps
Grow vegetative and flowering plants efficiently with metal halide bulbs.
Wattages available: 150, 175, 250, 400, 600, 1000, 1100.
Brilliance: There are many different metal halide bulbs. Super bulbs are always brighter than standards. Bulbs are available in many different models. Some bulbs with the same wattage are brighter than others.
Spectrum: Metal halide bulbs are readily available in a spectrum range of 3000, 4000, and 5500 K.
Life of bulb: Rated at 12,000 hours. Most growers replace bulbs after 12 months of operation. Take lamp and ballast to a specialty recycling center. Do not dump where they will wind up in a landfill.