I've had the same problem since joining thos forum less than a week ago. Had no idea there were so many Bettas out there. I've already spent 3 times more than what was planned for this stuff excluding the Betta.
But hopefully once the tank is done, the Tsuchiya (Betta) will have a very nice home.
And then I'll start another tank up, so that I can have at least one more Betta. Perhaps a cube tank this time.