Arka mySCAPE Casuarina Cones are cones from the casuarina tree (kangaroo tree). The Cones are ideal for natural water treatment and as decoration in every freshwater aquarium. They contain important tannins and other substances for a natural tropical-like water. The water is only slightly coloured, slightly acidified and the pH value is slightly lowered. Thanks to their coarse structure, they serve as a species-appropriate hiding place for shrimp offspring.Arka mySCAPE Casuarina Cones + for natural water treatment+ contains important tannins+ for near-natural, tropical-like water+ species-appropriate hiding place for shrimp offspring+ size of the casuarina cones: 1 - 3 cm+ package content: 50 cones