An Axolotl is an entirely aquatic salamander.

my Axolot has been about 4 inches since I got him, at LEAST 6 months ago. He has not grown at all, and even though I know they do not grow super-fast, i think he should have grown by now. He eats as much as he should, so i decided maybe a bigger tank should help.

They prefer water below 70F, I don't use a heater. The water tempurature, for the most part the water stays about room temperature. I try to keep one around though, because if he starts refusing to eat, or if he gets sick, boosting up the water temprature can help provoke him to eat. Also in the power goes out, my room sometimes gets pretty cold. I try to keep his tank at about 65F, which actually requires more cooling in the long run than heating.

I decided not to put the frog with him, because it just occured to me that they have completly different water temperature requirements, and they could not be happy.

And lastly, I realize the tank needs to be set up for awhile to allow the already existing ammonia to process and such. I'm not super-careful on watchign teh ammonia levels like a hawk or anything because teh tank gets cleaned every week. I normally do an ammonia test when I first set up a new tank or do major changes (I don't own a test kit, so I have to sneak one off from my enviormental class).

Thanks F-G. Very informative, I'm impressed you knew that all off your head!

I'm really interested if anyone has any opinions about the 24 hour air filter thing.