Which is better, a metal halide lamp or a high pressure sodium lamp?
See the main purposes, the first is mainly used for road lighting lamp main road, because the yellow light lamp, a penetration of heavy fog, second plant growth is mainly used for lighting, if no plant photosynthesis, usually at night will stop growing, if the lamp lighting, can promote plants to bear fruit
Each has its own advantages, the use is not the same, the effect is not the same.
Metal halide lamps are mainly used for indoor lighting, such as ceramic, metal halide lamps are mainly used in shops, etc., where lighting requirements are higher, the common metal halide lamps are generally used in warehouses, factories, and other regional lighting.