Brightwell Aquatics MicroBacter7 - Complete Bioculture for Marine and FW Aquaria 250mL / 8.45 Ounce Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifi Benefits are: ul&gt; 1. Rapid reduction of organic carbon, ammonia, nitrite, nitrate, and phosphate.2. Supplied in a state of suspended animation for maximum longevity Formulated utilizing extensive data compiled by microbiologists.