Clear, plastic tank provides a beautiful view of your underwater environment and is virtually unbreakable. Air-powered Whisper® three-stage filtration with small Bio-Bag® cartridges keeps your aquarium crystal clear and odour-free. Low voltage LED lighting insures a bright aquarium and enhances safety. This aquarium is appropriate for keeping one Betta or up to two community tropical fish (We don’t recommend goldfish in any kit smaller than three gallons due to waste levels.)