de*nitrate, 4 L / 1 gal.;

Sachem de*nitrate is a high porosity filtration product for the removal and control of nitrate in marine and freshwater aquaria by anaerobic denitrification. It is a porous inorganic solid about 4 mm in diameter. It does not require a special denitrifying filter or special culture feedings. It is also helpful in controlling nitrite and ammonia. The surface area characteristics of de*nitrate are similar to Matrix, making de*nitrate an effective support for the biological filter. Each liter treats up to 100 gallons. Marine or fresh water use.