Seachem de*Nitrate 

• Removes nitrates, nitrites, ammonia, and organics
• High porosity biological media
• Pore size well suited for anaerobic bacteria
• No danger of hydrogen sulphide production, as with sulphur based media

de❊nitrate is an economical, natural, porous material with a pore distribution and geometry that promotes both aerobic nitrification within the first few millimetres of depth and anaerobic denitrification at the core. The material has a high surface area and supports a high density of bacteria. Although de❊nitrate has capacity to trap nitrate, this, as with other nitrate retaining materials, such as certain zeolites and synthetic resins, is quite limited and the primary mechanism of nitrate removal is anaerobic.