Metal Halide Bulbs

Brands/Manufacturers may vary depending on availability.

• Metal Halide lamps with clear tubular outer bulb, high output and long reliable lifetime.
• Metal Halide lights produce a blue spectrum and is best for vegetative plants.
• The blue light stimulates vegetative growth keeping the plant compact and tight.
• The best way to light your grow room is with a combination of blue and red/orange light, to keep plants compact and flowering happily.
• This is best done by starting with a Halide then changing to a High Pressure Sodium for flowering or by using a multi-spectrum lamp.
• Plant growth (photosynthesis) is not then determined by lux or energy, but by the photons from the blue to red (400–700 nm) part of the spectrum.