The Growers Choice ROI-680 LED grow light is inspired by a collaboration between two of the most prominent and respected companies in the indoor grow lighting industry – TSL Horti Tech and Growers Choice. It is a full spectrum LED grow light with one of the highest PAR outputs in its class. Its PAR output comes in a whopping 1700 umol/s PPF, and PAR efficacy is 2.5 umol/j. The powerful ROI-E680 LED grow light optimizes plant growth at all stages, from seedling to vegetative growth. Suitable for large indoor grow space, the full spectrum ROI-E680 meets all demands of growers looking for a natural light spectrum, while consuming less energy and reducing operating costs.

• High Efficiency: With a total output of 1700 μmol/s and a wattage draw of 680 watts, the ROI-E680 has a 2.5 μmol/J system efficacy. So you save about 40% on electricity costs compared to HID. Additionally, lower heat output cuts cooling requirements by up to 40%.
• Provides Full Control: The onboard dimming function lets you adjust the light output down to 80%, 60%, or 40% when plants don’t need the full power, cutting down on your electricity costs.
• Even Light Distribution: Because of the large 8-bar design size, the light from the fixture travels evenly across the grow space, without losing intensity.
• 3-Year Warranty & Safety Certified: Rugged, waterproof housing makes it ideal for use wet and humid environments. Backed with a 3-year warranty.
• Controller Available: Compatible with Grower’s Choice Master Lighting Controller

The specially deployed GC-3K full phase spectrum fills the lack of the main photoreceptors and pigments outside the 660-450nm range. The GC 3k spectrum is very close to natural sunlight. The modest blues, extra red, and UV light exceed the photosynthetic needs of your plants during the flowering phase and increase the yields.