Sensi Bloom Part A is the first step of the two-part bloom base nutrients formula that delivers the reliability you need during your plant’s bloom phase. Introduce Sensi Bloom to your garden if you’re looking to give your valuable plants the solid foundation they need for rewarding floral development. Use Sensi Bloom when you want the best from your high-value plants. Sensi Bloom Part A is specially designed for use with diverse hydroponic growing media and all continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture.