The Hortilux Blue 250-watt, metal halide lamp provides near-perfect replication of natural sunlight with more of the blue spectrum than other brands. With a blue-, green-, and red-light ratio similar to that of the sun, the Hortilux Blue Lamp enhances vegetation and optimizes overall plant quality. Emits 18,000 lumens in the universal burn position and boasts a 10,000-hour life.