VegieMaster 600w Hydro Super MH (Metal Halide) Grow Light Bulb Lamp for 1000 Watt Digital Ballast Grow Tent This Optimized Spectrum Metal Halide Grow Lamp allows you to stretch your growing season to 365 days a year. Fine-tune your lighting system to provide optimum spectral energy levels that promote vigorous plant growth. Optimized Spectrum Metal Halide Grow Lamps provide high initial and maintained lumen output with optimum spectral energy required for vegetative growth. Optimized Spectrum Metal Halide Grow Lamps are designed to grow high quality, natural looking plants during all phases of their growth cycles. Super fast shipping from USA !