http://synbioproject.tech/cpi/applications/metabolix-dp-9002-for-denitrification-in-aquariums/
Metabolix DP 9002 for Denitrification in Aquariums removes waste products, such as nitrate and phosphate from the water, and converts them to bacterial biomass. DP 9002 is 100% biobased and certified Marine Biodegradable under American Society for Testing and Materials standards. Source
Metabolix biopolymers are based on polyhydroxyalkanoate polymers (PHAs) and are made by fermentation using renewable carbon-based feedstocks, making them 100% biobased in neat form. Metabolix has developed leading technology for production of a broad range of PHA biopolymers, as evidenced by an industry-leading intellectual property portfolio, and continues to innovate further to expand the range of performance and production economics of its PHA biopolymers. Metabolix biopolymers are produced and consumed naturally in living organisms such as microbes. As a result, Metabolix's biopolymers can be biodegraded by similar microbes present in ambient environments such as soil and water. Mirelâ„¢ soil and marine biodegradable polymers help to reduce plastic waste accumulation in the environment. Source