Tetramin weekend food is a specially formulated vacation diet to keep your tropical fish healthy whilst you are away Features: Pack contains 10 holiday sticks. 1 stick will sustain between 8 and 18 small tropical fish for 2 to 3 days. Each stick is 100% nutrition and contains no plaster. Each holiday stick contains all of the active ingredients found in other Tetra tropical foods and can sustain you fish for up to six days. Simply add the recommended number of sticks for your aquarium and your fish can feed on them at their leisure.