Advanced Nutrients 5401-14-3 Tarantula beneficial bacteria contains 57 types of microscopic organisms that colonize plant roots and leaves to guard against hostile bacteria and fungi attack. Ideal for both soil and hydroponic growing mediums. Tarantulas exclusive beneficial organisms release natural substances that encourage flowering plants to produce extra buds. The plants are denser, have shorter stems, more flowers, and increased branching. Tarantula also minimizes hydroponics nutrient leaching which aids in nutrient absorption. When used with potted plants, it improves soil structure by dissolving minerals so they are more easily absorbed.