The Grower’s Choice 3K 500W is a single-ended, full-phase bloom light engineered to deliver clean-spectrum, high-efficiency illumination across both vegetative and flowering stages. With a color temperature of around 3,100 K, it offers a warm, natural-light quality that is enriched by modest blue, abundant red, far-red, and UV peaks. This lamp shines with impressive performance: approximately 840 µmol/s of photon flux and about 56,000 lumens at the 100‑hour mark, translating to roughly 115 lm/W and a high color rendering index of 90, ensuring vivid and true-to-life plant coloration. Its precision-gassed quartz-ceramic arc tube is built for longevity, offering stable spectral output and full PAR delivery over an estimated 15,000-hour lifespan. 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.
