High Pressure Sodium
lamps are more efficient than Metal Halide, producing the highest number of
lumens per watt - about 10-15% more than a Metal Halide bulb. HPS emits an orange/yellow
color that is similar to the sun's spectrum in the mid day. This type of light
promotes flowering and budding. However, the lack of blue spectrum light can
sometimes make a plant stretch during the vegetative growth stage. Enhanced
performance HPS lamps provide some of the blue light missing from standard HPS
Lamps.
High Pressure Sodium
lamps are more efficient than Metal Halide, producing the highest number of
lumens per watt - about 10-15% more than a Metal Halide bulb. HPS emits an orange/yellow
color that is similar to the sun's spectrum in the mid day. This type of light
promotes flowering and budding. However, the lack of blue spectrum light can
sometimes make a plant stretch during the vegetative growth stage. Enhanced
performance HPS lamps provide some of the blue light missing from standard HPS
Lamps. 