The 500 ml bottle of Seachem De*Nitrate is a top of the line filter media designed specifically to provide additional support to the biological filtration process.

The media itself is an economical, natural, porous material sporting a pore distribution, shape and large surface area that encourages beneficial anaerobic nitrification within the first few millimeters of depth and anaerobic denitrification at the core.

Additionally, the media helps to remove harmful nitrates, nitrites, ammonia and organics that can cause harm or even kill your aquatic inhabitants. rocks or reef rocks remove nitrate by anaerobic denitrification and Seachem De*Nitrate removes nitrate using the same process, except the efficiency of this process is magnified several folds by directing the water to filter through the porous filter media.

Due to this process, excessive flow rates should be avoided, as they may impede the development of an adequate anaerobic environment to support denitrifying bacteria and as is the case with reef rock, anaerobic conditions are achieved by the porosity and the depletion of oxygen by the aerobic process at the surface.

De*Nitrate is an exceptional media for aerobic nitrification as well, making it an ideal biological filter in drip trays, canister filters, sumps or even box filters.

As mentioned earlier, it is important to note that at high flow rates (greater than 100 GPH), it will function solely as an aerobic filter and at slow flow rates (less than 50 GPH), it will function as both an aerobic filter and an anaerobic denitrifying filter.

Suitable for use in both freshwater and saltwater environments.