Gold Label Hydro A&B is a professional grade two part nutrient for the vegetative and flowering phase in coco and coco-based substrates. The chelated micronutrients guarantee optimum availability over a wide Ph range. Coco A&B used together, will result in the best coco garden gardeners can dream of. Take your coco growing to new heights and yields with Gold Label Coco nutrients! Use in combination with Gold Label Roots, Ultra Mg, and Ultra PK for optimum results.