Tetra Crescent 5-Gallon Aquarium Starter Bundle with 3 water conditioners Bundle includes everything needed to get started with an aquarium tank Tetra Crescent 5-Gallon Aquarium Kit includes power filter, catridge and LED light Use water conditioners for three-step approach to starting, maintaining, and improving aquarium water SafeStart allows you to safely add fish to tank immediately AquaSafe neutralizes chlorine and heavy metals in new water EasyBalance maintains water chemistry balanced between water changes