This product is Part A and Part B - Two Bottles pH Perfect Connoisseur Grow Part A & B by Advanced Nutrients Strictly for the Experts: an Ultra-Premium 2-Part Grow-Phase Base Nutrient Uniquely Formulated for Experienced Growers! If you’re already a top-notch grower praised by customers and friends, and you’ve already maxed out the potential of your current feeding program – and if, after all that success, you still want even more yield – then Advanced Nutrients’ flagship formulation, pH Perfect® Connoisseur Grow, is for you. No expense has been spared in sourcing only the most potent, powerful ingredients, that help to drive your crops to the most productive grow phase possible. This world-class formulation will absolutely satisfy your every need. And if that weren’t enough, you can throw away your pH meters and pens because pH Perfect® Technology automatically keeps the pH in the “sweet spot” every week of your grow. The bottom line: There’s no better base nutrient for elite growers who want to get the maximum genetic potential from their plants. And if you’re not completely satisfied with your results using this breakthrough base nutrient, you get 100% of your money back thanks to our Grower Guarantee! If you follow the label directions, pH Perfect Connoisseur Grow Part A & Part B will keep the pH of your nutrient solution stable within a range optimal for nutrient uptake for one week. For optimal results, we recommend using reverse osmosis (RO) water or water up to approximately 100 ppm (EC 160 μS/cm). This product is specially designed for use with diverse hydroponic growing media, including peat, rockwool, and expanded clay pellets, and all continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture. And since it also contains our proprietary pH Perfect® Technology, eliminating the need for pH and ppm metering, pH Perfect Connoisseur Bloom Part A is an invaluable asset to your growroom. Directions: Use 4 mL per Liter during all weeks of the grow phase. Use 2 mL per Liter for small plants with 3 to 4 sets of leaves. Use 1 mL per Liter for cuttings and seeds. Attention: This is a 2-part fertilizer. We recommend using both parts together.