SeaChem De*Nitrate Nitrate Remover 250ml
De Nitrate™ removes nitrates, nitrites, ammonia, and organics from both fresh and marine water. The high porosity of De Nitrate™ supports the proliferation of both aerobic and anaerobic bacteria that further remove these toxic aquarium byproducts.
Even when exhausted as an organic adsorbent, De Nitrate™ continues to be an excellent support for the biological filter and does not have to be removed.
Usage Instructions
- Place De Nitrate™ in a location where water flow passes through it, such as a canister filter, chemical filtration module, or box filter.
- Flow rate should not exceed 200 L (50 gallons) per hour.
- If higher flow rates are unavoidable, use Matrix™ or Pond Matrix™ instead.
- Rinse off dust before first use.
| Specification | Value |
|---|---|
| Volume | 250ml |
| Form | Granular |
| Application | Water filtration for aquariums |
| Removes | Nitrates, nitrites, ammonia, organics |
FAQ
Can De Nitrate™ be used in both freshwater and marine aquariums?
Yes, De Nitrate™ is effective in both fresh and marine water environments.
What is the maximum flow rate recommended for De Nitrate™?
The recommended flow rate is not to exceed 200 L (50 gallons) per hour.
Does De Nitrate™ need to be replaced after it becomes exhausted?
No, De Nitrate™ does not need to be removed or replaced once exhausted. It continues to support biological filtration.

Olivia Young –
I’ve used De Nitrate™ in my marine tank for three months now. The nitrate levels have dropped significantly, and the water clarity has improved. It fits well in my canister filter and works smoothly with the existing bacteria colonies. No need to replace it even after several weeks of use.
Warren Abraham –
Good performance in reducing nitrates. I placed it in my box filter and noticed a steady improvement in water quality. The flow rate was under 200L per hour, so it worked well. A bit dusty when first unpacked, but rinsing solved that.
Benjamin Ross –
This product has been a game-changer for my freshwater tank. I saw a drop in ammonia and nitrite levels within a week. The granular form fits nicely in the filter and doesn’t clog easily. I plan to keep using it long-term.