Fun and imaginative, this marina aquarium set includes everything you need to set up a cool shark theme tank. the set comes with cling-on shark decals and a flexible cut-out background that features a variety of shark species. it also comes with a plastic cut-out ornament for additional decoration. after you have set the shark scene with the decals, background and ornament, the rest is also pretty easy. simply install the filter and place the gravel at the bottom of the tank. then add water and doses of nutrafin water conditioners (included). the aquarium has an innovative canopy (aquarium lid) that makes feeding your fish with nutrafin max fish food (included) convenient. there is an opening at the top that allows you to sprinkle the food in the water without having to remove the lid. this turns feeding into a mess-free operation.