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 B is an invaluable asset to your grow room. When you mix these expert base nutrients into your reservoir, youre adding... Humic acid fertilizer for even better chelation, nutrient absorption, and pH buffering Wet Betty, a non-ionic surfactant or wetting agent that facilitates better absorption of nutrients by the roots Multiple Amino Acid complexes that increase the absorption of micronutrients your plants need to thrive Note: At Advanced Nutrients, we do not use paclobutrazol, daminozide, or any other banned plant growth regulators in our products.