1 block of Superfish Weekend Fish Food will last 15 fish of average size for 3 to 4 days. This pack contains 4 blocks so can be used on 4 different occations.
The block will slowly dissolve releasing food particles to keep your fish fed.
It is suitable for both cold water and tropical aquariums and can be used with all Tropical fish, Discus, Cichlids and Goldfish.
However this food block is not suitable for marine fish.