Alder Cones – Natural Tannin Booster for Aquariums Enhance water quality and boost shrimp health with Alder Cones. A must-have for blackwater aquariums and breeding tanks. Fast shipping from our Coburg store. Looking to naturally improve your aquarium's water quality while keeping your shrimp and fish healthy?Alder Cones are a powerful, all-natural addition to any freshwater setup — especially shrimp tanks, betta tanks, and blackwater aquariums. ✅ Releases beneficial tannins to lower pH and soften water✅ Antibacterial & antifungal properties – helps prevent infections✅ Stimulates breeding in shrimp and soft-water fish✅ Ideal for shrimp, bettas, tetras, corydoras, Apistogrammas, rams and more species of fish that live in low pH (Black water environment)✅ Creates a natural-looking, bioactive aquascape Each cone slowly releases humic acids and tannins, replicating the leaf-litter conditions of tropical streams. This not only supports fish health but also encourages vibrant colours and natural behaviour. How to Use:Simply drop 1–2 cones per 10–20L of water. Replace every 3–4 weeks for consistent tannin levels. Looking for other shrimp-safe botanicals?Check out our Indian Almond Leaves https://fishutaqua.com.au › products › indian-almond-leaf Note: Item is Prices per Each, buy 5 to get 1 for FREE