Fun and imaginative, this Marina Aquarium Set includes everything you need to set up a cool Sur'Fin theme tank. The set comes with cling-on surfer decals and a flexible cut-out background that features a cast of laid back surfers. After you have set the surfing scene with the decals and background the rest is also pretty easy. Simply install the filter, then add water and doses of Nutrafin water conditioners (included). 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. Gravel available separately. Key Features - 14 L (3.7 US Gal) Aquarium Set - Sur_Fin theme cling-on decals and background - Marina Internal Filter - Nutrafin Aqua Plus and Cycle Water Conditioners