Specifically designed for high-performance Fluval 07 and 06 external filters, the nitrite-eliminating and resin-impregnated blocks work doubly hard by acting as an effective filter media for both mechanical and biological filtration.
Key Features:
- Specifically designed for Fluval 306/307 and 406/407 filters;
- Effectively control and eliminate nitrites;
- Effectively trap floating particles (debris, excess food, waste, etc.) for clear water;
- Help prevent fish loss;
- Support beneficial bacteria for a very healthy aquatic environment;
- Are custom-fitted to increase filtration performance;
- Should be replaced monthly or as needed after testing aquarium water with the Fluval test kit for optimal results;
- Come in a convenient 6-pack;
- Suitable for fresh and saltwater aquariums.
