Zoo Med Laboratories AZMBB2 Mini Banquet Block Feeders High protein micro pellets For fresh or saltwater Lasts 3-4 days Zoo Med Laboratories in Banquet Block Feeders Zoo Meds Original Banquet time release feeding blocks last 3 to 14 days, depending on block size Original Banquet blocks are also very useful for small fry which do best when constantly feeding Original Banquet blocks are also very useful for small fry which do best when constantly feeding