Bascomb wrote:Dormant -- There is a general rule of thumb that you need 10 gallons per inch. Two one-inch turtles would make it 20 gallons at least and with much growth would require another tank. The little ones adapt to deep-water quickly and do well. If you get them just out of the eggs, that may be a point. In the wild they hit the water and get going. I have two yellow bellies and they are in a 30-gallon and were put in as hatchlings. Sliders need much more water, and filtration than most other aquarium dwellers.
Alls I'm saying is my turtle is less than two months old and when I filled the water up half way in my 10 gallon tank, he/she got really scared and I had to remove a good amount of water before he calmed down. My turtle was never in the wild...in fact, it was more than likely bred to be consumed, thus the reason we got he/she on the street of China Town, NY.
My turtle is healthy...always active, always willing to eat, and even comes to the side of the tank now when my girlfriend or I come around. I know general rules of thumb and all that, but I can't deny what I see, and I see that my one turtle that is the same size as GThiele's turtles, is very happy in a 10 gallon tank and it seems to be more than enough room.
That isn't to say it would be different for two babies, but I can see two babies being just in a at least a 10 gallon for the first month or two...