The Grower’s Choice 4K 600W DE MH is a premium double-ended 600‑watt metal halide lamp that emits a slightly warmer 4,000 K spectrum, making it well-suited for both vigorous vegetative growth and the transition into flowering. Its spectrum is rich in blue, green, and red wavelengths, enhanced by UV emissions, this system is designed to stimulate resin production and support healthy plant structure. The quartz construction ensures consistent PAR output, with approximately 90% lumen retention after 5,000 hours and only about 5% degradation by 10,000 hours. At around 100 lumens per watt, it delivers approximately 60,000 lumens at 100 hours, offering excellent canopy penetration while operating cooler than many conventional HID bulbs. But if this lighting system is too powerful for your grow space, then take a look at the ROI-E420 system, or the smaller 10K 1000W SE for better light management.
