JBL Holiday (Food block)Weekend complete food block for aquarium fish. Convenient feeding of aquarium fish during your holidays for about 2 weeks. For tropical freshwater fish. Nutritious and easily to digest: ideal feeding conditions for up to 25 ornamental fish. The block dissolves as the fish intake the food. No water clouding: reduced algae growth thanks to balanced phosphate content, better water quality due to better digestibility of the food, which reduces fish