Dennerle Catappa Leaves are a natural water care and feed supplement. The mature dried leaves of the tropical almond tree Terminalia catappa are regarded as one of the recipes for success of Asian breeders and exporters. They contain numerous natuaral active substances which have beneficial effects on water and fish. Sucker Catfish (e.g. Ancistrus varieties) and shrimps appreciate the leaves as a valuable feed supplement. - Adds natural substances to the water which aquarium fish are accustomed to from their native waters. - Promes well-being vitality and spawning instincts. - Strengthens and protects the mucous membranes. - Boosts resistance to infection. - Prevents spawn mould and fungal diseases in fish. - Has a slight acidifying effect and stabilises the pH value. 10 pieces per pack sufficient for 1000 litres.