The 400W Metal Halide is ideal for vigorous growth during veg. Delivering a balanced full spectrum with enhanced blue and violet wavelengths, a color temperature of 4200K, and output of 36,000 lumens, it supports lush foliage development and strong root systems. Designed for efficient energy use while maintaining high light intensity, this bulb helps growers optimize power consumption without sacrificing performance. Its E39 base ensures compatibility with most standard MH fixtures, and covers a grow area of approximately 3ftx3ft to 4ftx4ft. If you need more light intensity for a larger setup, check out the 1000W MH Grow Bulb. Looking for something specifically for the flowering stage? The 400W HPS Grow Bulb offers a red and orange spectrum that promotes dense bud formation and enhances resin production.
