A dry microbial blend which rapidly establishes comprehensive biological filtration, providing a host of non-pathogenic, heterotrophic aerobic and anaerobic microorganisms (nitrifiers, denitrifiers, as well as species which focus on remineralization of latent organic material). Aggressively reduces ammonia, nitrite, nitrate, and phosphate. To inoculate newly-established systems, 1 g per 200 gal., repeated after 7 days. Maintenance: 1 g per 500 - 750 gal. weekly, or per 3,500 - 5,000 gal. daily.