I bought this intending to use it for one young female betta. My betta is still a baby but she loves it. I was a bit worried about the reviews saying that the filter was way too strong, but I cut a small piece of biofoam (you can find it for under $5) to slow the filter a bit and it honestly works perfectly. Again, my betta is a BABY and she swims EVERYWHERE just fine! It isn't glass (which I knew already) so it will scratch fairly easily, but as long as you're not actively trying to scratch it, you'll be fine. The light is a bit dim as well, but that's okay as I wouldn't want it to be too much for the betta anyway. The filter also isn't exactly silent, though it's not that bad. Overall, it's pretty good and provides a lot of space for the baby fish.