4 gallon tank, Oceanic Systems, Inc. Evolve 4 - LED Light Aquarium Kit, aprox $55: good betta tank, live plants, sand, marimo moss ball, driftwood. Your betta will display beautiful swimming, flaring and exploring behavior in these larger tanks that you may not see when they are kept in smaller habitats. Aquarium Garden, Aquarium Kit, Aquarium Fish Tank, Planted Aquarium, Fish Tanks, Planted Betta Tank, Aquascaping, 10 Gallon Fish Tank, Water Terrarium