Dutch Master invested six years of research and development in Gold, and the payout is the world's most powerful hydroponic nutrient! Dutch Master only uses the best available British & US Pharmaceutical & Laboratory Reagent grade chemicals, phyto-nutrients & aminos when making Gold. Gold is available in Grow (A=5-0-2.9, B=1.5-1-3.5) and Flower (A=4.5-0-6.5, B=0.5-5.3-6.3) formulas.