Zoo Meds Original Banquet time release feeding blocks feed your fish for longer! Original Banquet Blocks can be useful for small fry which do best when constantly feeding as well. Original Banquet Blocks can also be utilized as a great daily food source for problem feeders such as Plecostomus, Algae Eaters, Redtail Sharks, Gouramis, Saltwater Tangs, Angels and Damsels. Time-release feeding blocks feed your fish for longer Now with high protein micro pellets! Great for bottom feeders Will not cloud water One block lasts 10-14 days Place the time release food block in your aquarium. Multiple food blocks can be positioned across the aquarium floors to accommodate territorially aggressive fish. One Original Banquet block will feed approximately 15-20 average-sized aquarium fish. Note: Do not use this product in fish bowls or aquariums which do not have aeration or filtration.