For explosive vegetative growth and overall plant health, you should check out a metal halide lamp from one of the best-known names in the world.

This 1000-watt BT-56 G.E. Metal Halide lamp emits over 100,280 initial lumens at a color temperature of 4,000 kelvins, and boasts an 11,000-hour life rating.

This lamp is intended for use in metal halide systems only.