The GloFish® 6.6-Gallon Aquarium Kit includes a 6.6-gallon glass aquarium, a plastic hood with feeding access, a blue and white LED lighting system, the Tetra® Internal Filtration System with a medium Tetra® Whisper® Bio-Bag® Filter Cartridge, a digital thermometer, a GloFish® Special Flake food sample, a Tetra® AquaSafe® water conditioner sample and a full-color setup and maintenance guide. The included Tetra® Internal Filtration System features mechanical filtration to catch debris and water and chemical filtration with Ultra-Activated® Carbon for excellent removal of odors and discoloration. See your fish and décor fluoresce brilliantly under the LED lighting when you switch between Off, White Light Mode and Blue Light Mode. Complete your aquarium with the dazzling colors of GloFish® fluorescent fish, plants and décor (sold separately) to create an underwater fluorescent experience.