No longer at the mercy of the weather. The iPower 400-watt Metal Halide Bulb lets you grow better by providing reliability and performance. By concentrating its output around 450-500nm (blue to white) wavelength of light, this bulb provides the essential spectrum needed for most plants on maximizing short internodes and chlorophyll density.

• iPower 400 watt MH bulb compatible with electronic and magnetic ballasts, 36,000 Lumens
• 6,000K blue & violet spectrum and high PAR (Photosynthetic Active Radiation) to stimulate vegetative growth
• Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5,000 hours.
• Startup time: allow 3-5 mins for full bright. Please wait at least 5 mins after power shut off before striking again.
• Long bulb life: 12,000 hours. New long lasting life with a high lumen output and low energy consumption. Warranty: 1 year

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes and APO addresses not available for this item

Warranty: 1 Year Manufacturer Limited Warranty