The Aqueon Betta Castle Kit is a half-gallon kit shaped like a medieval castle turret! And can be stacked with other betta castles. Each half gallon vessel includes four red flags, decorative gravel, betta food and Betta Bowl Plus water conditioner.
Half gallon castle aquarium with flags
Stack up to three Betta Castles to build the ultimate castle
Convenient feeding hole allows for feeding betta without taking the entire lid off