Zoo Med Laboratories Mini Banquet Block Feeders - 18 Blocks Total (3 Packs with 6 Blocks per Pack) 18 Blocks Total (3 Packs with 6 Blocks per Pack) Zoo Med Laboratories Mini 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.