PH PERFECT® SENSI BLOOM PART A Give Your Plants Reliable Full-Bloom Nutrition pH Perfect® Sensi Bloom is the two-part bloom base nutrients formula you can absolutely count on during your all-important bloom phase. Use pH Perfect Sensi Bloom to give your valuable plants the solid foundation they need for rewarding floral development. Use pH Perfect Sensi Bloom when you want the best from your high-value plants. If you follow the label directions, pH Perfect® Sensi Bloom Part A 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 ?S/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 Sensi Bloom Part A is an invaluable asset to your growroom.