Seachem De*Nitrate 1000ml – High-Capacity Biological Nitrate Removal Media

Seachem De*Nitrate 1000ml is a high-capacity, highly porous biological filtration media designed to naturally reduce nitrate levels in marine and freshwater aquariums. By promoting anaerobic denitrification, it mimics the nitrate-removing function of live and reef rock, providing long-term nitrate control without frequent replacement.

Its exceptionally high surface area supports a dense population of beneficial bacteria. When used in low-flow environments, oxygen is depleted within the media, allowing anaerobic bacteria to efficiently convert nitrates into harmless nitrogen gas. This helps prevent nitrate-driven algae growth while improving overall water quality.

Ideal for larger systems or tanks with higher biological loads, Seachem De*Nitrate 1000ml is best used in canister filters, box filters, or dedicated chemical filtration chambers where controlled flow can be maintained.

Key Features:

• Encourages anaerobic denitrification for effective nitrate reduction
• Replicates the nitrate-removal process of live rock
• Extremely porous structure for maximum bacterial colonisation
• Long-lasting media — not exhausted if nitrates remain stable
• Helps control algae by limiting excess nitrates
• Suitable for marine and freshwater aquariums
• Optimised for low-flow filtration (≤200 L/hr)
• Large 1000ml size ideal for bigger tanks and high bioload systems

Seachem De*Nitrate 1000ml is a premium biological filtration solution for aquarists needing reliable, long-term nitrate control. Designed for low-flow systems, it supports anaerobic bacteria that naturally break down nitrates, improving water clarity and creating a healthier aquatic environment. Perfect for reef tanks, planted aquariums, and heavily stocked systems.