Fritz Casuarina Cones 20pk
Fritz Casuarina Cones gives a unique application of tannins, humic acid, and habitat. Casuarina cones provide tannins, lower pH, have anti-fungal and anti-bacterial properties, enhance coloration and increase spawning behavior. The tannins released from these pieces create a more natural environment for Bettas, shrimp and other fish. Casuarina cones contain humic acids and tannins which are known to have antibacterial properties, naturally lower pH and create blackwater conditions in the aquarium. Fritz Casuarina Cones are suitable for all soft-water fish including betta, discus, tetras, angelfish, and killifish.
Casuarina Cones Features
- Naturally Adds Tannins and Humic Acid
- Anti-Fungal and Anti-Bacterial Properties
- Great for Freshwater Fish in Soft-Water Environments
| Product Details | Specification |
|---|---|
| Quantity | 20 pieces |
| Material | Natural Casuarina Wood |
| Application | Blackwater environment, pH reduction, fish health support |
| Compatible Species | Betta, Discus, Tetras, Angelfish, Killifish |
FAQ
How do Casuarina Cones affect water pH?
Casuarina cones naturally lower pH due to the release of tannins and humic acids, creating a soft, blackwater environment suitable for sensitive fish species.
Are these cones safe for shrimp and other invertebrates?
Yes, the tannins and humic acids in Casuarina cones are beneficial for shrimp and other invertebrates, providing a natural habitat and supporting their health.
Can Casuarina Cones be used in a community tank?
Please contact customer service

Anna Lee –
I’ve used these cones for three months in my betta tank. The water turned slightly brown, and my betta has become more active. The fish seem healthier and more vibrant. Great for creating a natural blackwater setup.
Madeleine Howard –
The cones slowly release tannins and have improved the water quality. My angelfish now have better coloration. I noticed a slight pH drop, which is exactly what I wanted for soft-water fish.
Jack Metcalfe –
I added one cone to my tetra tank and saw a noticeable change in water color and fish behavior. The anti-fungal properties seem to help with fish health. Easy to use and effective.