The Serenity Goldfish block slowly releases food up to 4 days. Serenity Goldfish Weekend Feeder 4 Block Specifications: A specially formulated block that slowly dissolves and releases quality goldfish food for your pet while you are away. As well as feeding your goldfish, the ingredients will help neutralise and purify the aquarium water. Suits most freshwater fish. Feeds 2 – 6 average sized fish in 20 – 60 litres for 2 – 4 days.
