A dry microbial blend which supplements existing biological filtration in established systems, providing a host of non-pathogenic, heterotrophic aerobic and anaerobic microorganisms (dominated by species which focus on remineralization of latent organic material). Shifts Redfield Ratio, increases average ORP, improves light penetration, enhances protein skimmer efficiency, reduces POM, DOM, and DIN. 1 g per 500 - 750 gal. weekly, or per 3,500 - 5,000 gal. daily.