General Hydroponics ®SubCulture® B BACTERIAL ROOT INOCULANT Selected microbes are cultured to live in high salt environments. Biologically aids nutrient absorption.SubCulture-B is a (probiotic) inoculum of beneficial microorganisms that will increase the vitality and yield in all plants. Whether in soil or hydroponics, our proprietary blend of bacteria and trichoderma fungi colonize the root zone and media to form a symbiotic relationship with your plants. Root systems will increase, as well as nutrient absorption; thus creating bigger, healthier plants. Start with SubCulture-M, add SubCulture-B to establish root systems.