Convenient feeding of aquarium fish for 3 days. Weekend fish food for tropical freshwater fish. Nutritious and easy to digest. It is anideal feeding conditions for medium-sized ornamental fish up to 15 cm. The block dissolves when the fish feed. No water clouding: reduced algae growth thanks to balanced phosphate content, better water quality due to better digestibility of the food, which reduces fish excrement. 98.5% of all fish species eat JBL food immediately during research expeditions in freshwaters. No processing of cheap fish meal, fish meat from fish fillet production for humans is used