Emerald Harvest Cali Pro Grow B (2.5 US gal / 9.46 L) Case (2 Qty) is a high-quality, professional-grade nutrient solution designed for serious growers. As part of Emerald Harvest’s two-part base nutrient system, Cali Pro Grow B works in combination with Cali Pro Grow A to provide essential macronutrients and micronutrients that promote vigorous plant growth. Looking to enhance yo... https://www.hydroponicstown.com/cali-pro-grow-b-2-5-us-gal-9-46-l