Advanced Nutrients pH Perfect Sensi Bloom A&B Sets Available in 1L, 4L, & 10L Sets Sensi Bloom A + B has been specially designed for use with all hydroponics, sphagnum, coco coir and soil growing mediums. Sensi Bloom A + B has been developed for use with any and all hydroponics, aeroponic, drip irrigation, NFT, flood and drain and continuous liquid feed growing systems.