Advanced Nutrients Tarantula is a highly advanced and highly concentrated soil inoculant that will give you sturdy plants and healthy growth. Tarantula contains the highest concentration of microorganisms available and offers a wide array of beneficial effects. This special formula increases root mass and re-establishes populations of beneficial bacteria in unbalanced soil. It also promotes greater lateral branching and an increase in budding sites. By providing both plants and soil with the components necessary for healthy growth, Tarantula gives you incredible, superior results.