Originally Posted by Sakura8
dragonii, bettafish is correct. A betta will literally drown if they can't surface for air. Same with other members of their family, the anabantid/anabantoid family, which includes gouramis and wolf fish. They all use a labyrinth organ to breathe air from the surface because they originate from waters that are low in oxygen (either shallow or very warm).
I kinda like the new Fluval 12 but I'd have to do as suggested and cut off the glass. I hate that thing, it makes working with the tank so hard.
You would be surprised at how easy it actually is. Only issue is that you have to drain some water out before reaching into the tank.
Gallon Gatorade jug and a piece of hose takes care of that.
Other than that, use a magnet to clean the glass and it's all good.
I have had the 6 gallon for about 2 years and I bought the 12 as soon as it came out. I've never tried a betta in them but I have heard people say that it will work. They claim that the betta figures out where the opening is and has no problems getting to it. Don't know, like I said, never tried it. But I do know that my other fish all know where the opening is. As soon as they see the fish food bottle they all go to that opening in a second. Even the shrimp.
My 6 gallon, it currently has nothing in it. We are about to redo it as we moved everyone to the new 12 gallon.
The new 12 gallon.