Agrostim™, Agrostim (Farm Verified Organic)™ and SuperGrow™, are natural fertilizers specifically designed to restore the soil’s natural agro-ecosystem. Manufactured by Ecotech LLC and distributed by Andaman, these organic-based products energize soil microbial activity by activating microbial processes critical for conversion of nitrogen, phosphorous, potassium and sulfur into forms that can be easily absorbed by plants. Andaman is the exclusive distributor of Ecotech, LLC. Organic-Based Fertilizers.