Sure, but it’s more important what size tank you wish to get. For a beta I would say 5 gallon is the best and they do best in planted tanks. It’s also important to set it up with filtration, heater and light. Finally, weekly water changes of up to 20% are recommended, no matter if you have filtration or not. This is especially true for the extreme half-moons which are very susceptible to fin rot if the water conditions aren’t impeccable.