This kit includes everything you’ll need to start your own fish tank! The kit includes a 4.5 gallon plastic fish tank with safety lid that opens easily for feeding, (lid color may vary) a drip style filter with replacement cartridge, air pump, resin castle decoration, silk aquarium plant, aquarium background and chrome and gold deco stones to decorate your tank. Castle decoration measures 6″H x 4.25″W x 4.25″D. Silk aquarium plant measures 8″H. Aquarium background is reversible and features a blue water scene on one side, and a blue gradient on the other