Koller Products AquaView 3-Gallon Aquarium Starter Kit includes energy-efficient LED lighting with 7 color choices plus 4 transitioning and color combinations you can choose depending on the time of day or to enhance your viewing pleasure along with an internal power filter that will keep your aquarium water optimal and your fish healthy. Imagine watching beautiful tropical fish gently swimming back and forth, ideal for helping forget about stress in everyday life. People enjoy watching aquariums as they can be calming and relaxing, as well as a beautiful addition to any home or office. Gravel and decor sold separately. Power filter uses Koller Products XS replacement filter cartridges (B08CYVX31S) available on Amazon. Feel free to contact us at customercare@kollerproducts.com if you should have a question or need help. Dimensions: 14. 75" L x 10. 25" W x 9. 5"H. This fish tank is totally a W.