Nutrients found in Grow A and Grow B are balanced, highly bioavailable, and easily absorbed and utilized. Grow A & B contain potassium, magnesium, phosphate, calcium, and other elements all needed to aid in the growth cycle. Magnesium helps to activate many plant enzymes needed for growth. Every element in Grow A & B plays a role in helping to produce the best quality plant and growth rate. Available in 1, 5, 20 Liters also in commercial quantities. Designed to work with all additives. Better than the nutrient you are currently using. Developed for high performance. "We pride ourselves on our pharmaceutical grade products and the inputs we use" When manufacturing our Grow A we do not use nasty preservatives or coloring which enables our product to be manufactured using ingredients that consist of Analytical, Pharmaceutical, Technical or Food Grade ensuring industry-leading products and the highest quality and consistency available. You may observe the color vary from green to a tea color as the product matures, this has no impact on the product and is purely cosmetic, something we as a company would prefer to see.