"I bought #48305, the largest one. I love that it is made in the USA. It was tagged 2 gallons when I got it. Thought I bought too large of one, but my betta is swimming for joy. I used 1 1/2 gallons water (betta was in 1/2 gallon pitcher before this new home). I placed a small USA made clay pot in the bottom on its side (after conditioning it in water for a few days). It looks nice with the stones around it and the betta goes in and out. He is so much easier to see-I appreciated his beauty before, now I am able to appreciate it even more. I am planning on getting another betta next week (bought an extra bowl) so I will have double the fun!"