Aquarium Capacity: 32 liters Number of fish: 7 Type of fish: Neon Tetra Age: Approximately 3 months Accessories: 50-watt heater and A2000 waterfall filter And a biological cycle solution and a chlorine remover solution. Approximately half of the biological cycle solution bottle remains, and a quarter of the chlorine remover. The chlorine remover sterilizes the sink water, and the biological cycle supplement removes toxins.