The sera Catappa Leaves allow conditioning the water as in natural biotopes. The tropical almond leaves support natural behavior and readiness to spawn in ornamental fish and shrimps. Furthermore they prevent bacterial and fungal infections. Due to their astringent properties, they support the healing process after injuries. Shrimps, other crustaceans and catfish readily accept the tropical almond leaves as additional food.Application sera Catappa Leaves -Tropical almond leaves-Leaves will sink within 24 - 48 hours. Tip: They sink immediately and are easier to digest by pouring boiling water over them in advance. Active substances are released within a period of 2 - 3 weeks.sera Catappa Leaves S: put one leaf per each 30 l of aquarium water into the tanksera Catappa Leaves M: put one leaf per each 60 l of aquarium water into the tanksera Catappa Leaves XXL: put one leaf per each 100 l of aquarium water into the tankNatural product with possible variations in shape, color and size.