Our 3 Day, 7 Day & 14 Day Vacation Feeder Block Combo Bundle Set Feeds Your Pet Fish While You Are Away!! Made from Pro-balance high-quality fish and ideal to feed your fish while travelling Feeds aquarium fish for up to 3, 7, 14 days or 33 days! Has essential vitamins and minerals for healthy growth These Multi-Day Feeding Block will be a great addition to any aquarium just to keep as a spare for that spur of the moment vacation.