Advanced Lighting Solutions is proud to announce the worlds first twin arc metal halide lamp. The new bulbs include two separate arc tubes in the same lamp envelope. The bulb only fires up one arc tube at a time but it alternates between the separate arc tube each time it is ignited. So one go the bulb is spilling light from one arc and the next time it fires it is driving the other arc tube. Currently the bulb only comes In a 250w mogul base lamp with dual 20k arc tubes or with a 20k and a 10k arc tube. The dual 20k arc tube lamp should result Im greatly increased lamp life and the dual color twin arc lamp will allow the reefer to have 10k light for growth and 20k light for color in the same bulb. What can we say, friggin awesome! More details forthcoming.