The VermiT Extractor is specially designed to increase the quality and longevity of compost tea. Unlike traditional compost tea, which must be used within a short period of time, VermiT maintains its viability for seven to 10 days when refrigerated. This ground-breaking process is used to multiply beneficial microorganisms through the recirculation and injection of highly aerated water into a VermiT Bio-Cartridge (sold separately). When the fresh-brewed VermiT is extracted, it contains no sediments because of the extractor?s unique design, and therefore is great for hydroponic applications.