3.5 gallon Top Fin aquarium kit with built in filter system. Includes two cartridges as well to get you started, and color changing light. The light includes adaptor and can either be set to white, changing colors that fade into each other, or can be stopped when in color changing mode on a specific color preferred along with selection of solid color choices. The filter has a slower but still very effective current strength so perfect for fish that don’t like strong currents such as bettas. I am only selling because I purchased a larger one but was VERY happy with this tank and all its components. The filter has two cartridges so keeps the tank extremely clean while not having to change them as often as well. Never had issues with leaking, improper filtering, or inconvenient placement of lid and components. Just get gravel and a few decorations and you’re all set with this all-in-one aquarium kit!