The Growers Choice ROI-420 LED grow light is a high performance and cost-effective lighting solution for commercial and home horticulture. The powerful ROI-E420 LED grow light optimizes plant growth at all stages, from seedling to vegetative growth. Suitable for large indoor grow space, the full spectrum ROI-E420 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 1090 μmol/s and a wattage draw of 420 watts, the ROI-E420 has a 2.6 μmo