SEACHEM DE-NITRATE 250ML
de-nitrate™ is an economical, natural, porous material with a pore distribution and geometry that promotes both aerobic nitrification within the first few millimeters 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 is quite limited compared to other nitrate retaining materials such as certain zeolites and synthetic resins. The primary mechanism of nitrate removal is anaerobic denitrification, similar to the process used by live rocks or reef rocks.
Efficiency is significantly enhanced when water flows through the porous structure of de-nitrate™, creating anaerobic conditions in the core where nitrate is converted into nitrogen gas and released.
| Specification | Value |
|---|---|
| Volume | 250ml |
| Form | Porous granular material |
| Primary Function | Removes nitrate via anaerobic denitrification |
| Surface Area | High |
FAQ
How does de-nitrate™ remove nitrate from aquarium water?
de-nitrate™ removes nitrate through anaerobic denitrification, which occurs in the core of the porous material. As water flows through the material, anaerobic conditions are created, allowing bacteria to convert nitrate into nitrogen gas, which is then released from the system.
Is de-nitrate™ effective in reducing nitrate levels over time?
Yes, de-nitrate™ is effective at reducing nitrate levels over time due to its high surface area and ability to support a dense population of denitrifying bacteria. Performance is enhanced when water flows through the material, promoting consistent anaerobic conditions.
Can de-nitrate™ be used in both freshwater and marine aquariums?
de-nitrate™ is specifically designed for marine aquariums and is most effective in saltwater environments where anaerobic denitrification is beneficial. It is not recommended for freshwater systems.

Sarah Bailey –
I’ve used de-nitrate™ in my marine tank for three months now. Nitrate levels have dropped significantly, especially after adding the product to the filter flow. The material seems stable and doesn’t break down easily. Works well with my existing filtration system.
Rachel Bower –
It’s a simple addition to my filter. I noticed nitrate readings go down after a few weeks. The granules stay intact and don’t clog the filter. I’d recommend it for reef tanks where nitrate control is essential.
Dylan Black –
After switching from a chemical nitrate remover, I found de-nitrate™ to be more natural and effective. The tank has maintained stable nitrate levels without any side effects. Easy to install and works well with my sump setup.