This tank is a great 3 gallon starter kit for your betta. It comes with a filter and a led light. This tank is great because the filter doesn't create to much current so that your betta can still swim comfortably. It measures 10" D x 10"W x 10.512"H. So here is number one for a great betta fish tank. You can add fake plants or even a heater to the aquarium to keeo it the nice 76 degrees Fahrenheit that bettas like.
You can buy this betta fish tank here
The AquaFarm combines a 3-gallon fish tank with a vegetable and herb grow bed into one closed-loop system that fits easily on any kitchen counter. The waste from the fish provides nutrients for the plants, and the plants clean the water for the fish! This betta fish tank helps you keep the herbs in the house and grows them really well. Plus being 3 gallons its great for your betta fish and enough to allow a heater in the betta tank
You can buy yours here
The Marineland Contour Aquarium Kit with Rail Light provides a stylish and easy-to-use base for starting your new aquarium. This unique design features hidden, 3-stage filtration, daylight and moonlight LED settings, one RITE-SIZE Z filter cartridge and holds up to three gallons.