Advanced Nutrients Grow, Micro and Bloom comprise a superior three-part fertilizer that vastly improves the three-part concept growers have relied on for years. Advanced Nutrients three-part fertilizers are higher quality than other fertilizers because they contain pharmaceutical grade substances instead of inferior components used by other manufacturers. Our products work better because we use superior chelates. A chelate is a substance that helps nutrients transfer from fertilizers into plants. We use more chelates per micronutrient than any other manufacturer (2-4 chelates per micronutrient) in order to maintain optimum bio-availability over the longest timeline. Advanced Nutrients three-part is 20% more concentrated than the next-strongest general hydroponic fertilizer. Our product isn't just stronger: it's less expensive, and it produces healthier plants and higher yields. Success is measured by weight and quality, so don't waste money on mediocre results- advance to the highest level of growing with Advanced Nutrients. Considered a major upgrade from GH's 3 part fertilizers.