For sale, aquarium in very good condition. 📐 Aquarium dimensions: Width: 85 cm Height: 61 cm Depth: 40 cm Filtration system (two filters installed for superior mechanical and biological filtration): First filter: Submersible electric filter (Resun) with a capacity of 1000 liters/hour, designed for waste and dirt removal and water circulation. Second filter: Sponge filter, designed for biological filtration and beneficial bacteria colonization to maintain water clarity and fish health. Fish (4 fish): 2 Koi fish + 1 special Goldfish + 1 Pleco for cleaning the aquarium. Substrate and decor: Substrate: Approximately 10 kg of gravel. Decor: A large, two-piece separate ship. Two types of food: one for Koi fish and the other for Goldfish. Also included: Heater for regulating aquarium temperature. Air pump with two oxygen outlets (Sebo). Price is negotiable. Serious buyers only.