Zoo Med's Betta Banquet Food Blocks are made with whole Micro Betta Food Pellets and Krill to provide essential nutrients that Bettas need. As a block dissolves, Betta Food Pellets are exposed allowing your Betta to feed throughout the day. Each block will feed one Betta for up to 7 days, depending on the pH and hardness of the water. Be sure to perform routine water changes weekly. Made in the U.S.A.