HOBBY Catappa Bark Don Perfume. Leaves and bark of the catappa have long been used in aquaristics in Asian countries. The almond bark is only much stronger in the effect similar to that of the almond tree leaves (Catappa Leaves). The humin and tannins contained substances, strengthen the mucous membrane of the fish and make it difficult to penetrate this protection. The bark pieces are equally helpful in the reproduction and rearing of your fish. It promotes the matting readiness of your fish. Even blue algae (cyanobacteria) are inhibited by the substances contained in the reproduction. It is also worth noting that positive bacteria are proven not to be harmed for aquaristics. It is highly recommended to add a small piece of Catappa Bark or our Catappa Leaves to the transport water when transporting fish. This greatly reduces the susceptibility and stress of the animals due to the high germ load. You can also prepare your fresh water if you want to perform a water change directly with our bark pieces. This is designed to reduce stress on your fish. By delivering their humin and tannins, the almond bark creates a natural environment and increases the vitality and well being of your aquarium inhabitants. Nice is that for the extraction of the bark, no tree has to suffer or die. Features: promotes the vitality and well being of your animals originates from the natural environment of your shrimps and fish supports your shrimps moult has disinfectant properties preventive against fungi infestation (of spawn as well) and bacterial infections indispensable for many species Usage: Put a piece of bark directly into the aquarium. One piece of catappa bark is sufficient for approx. 100 litres of water. The bark will sink to the bottom of the aquarium in a little while. Should you need a fast disposal of the active ingredients, infuse the catappa bark quickly in hot water. Usually, the active agents in our catappa bark are released to the water during a period of approximately 3 weeks. After that, you may introduce a fresh piece to the aquarium. The used catappa bark piece can remain in the aquarium as additional feed or hide out for crustaceans and shrimps, or may be discarded. If you use catappa bark in addition to catappa leaves, please consider this when determining the dosage. Catappa bark can be kept for an indefinite period of time if stored at a dry place. Since it is a purely natural product, changes in form, color and size may occur. Pack size: 12 pieces of catappa bark for 1,200 litres of water