Natural care for fish and invertebrates in freshwater aquariums Natural effect of tropical almond leaves: promotes well-being, vitality and spawning readiness Natural water conditioner and protection for mucous membrane from the natural habitat of our aquarium dwellers. Promotes well-being, vitality and spawning readiness. Tanning agents have a compressing effect on the mucous membrane and prevent diseases. Directly harvested from the tree, cleaned, smoothed and sun-dried Contents: 1 packet Nano-Catappa, 10 leaves, use: 1 leaf 15     30 l water. Active substances are released completely after 1     3 weeks