hello I have had 2 red ear sliders for about 9 months they must be atleast 2 inches right now and when I got them they were a little smaller than that. They really have not grown that much but suprisingly they are still alive. The 10 gallon tank they are in right now has a good setup, basking area with a desk lamp, but they have never had a water heater. So basically for 9 months there water has not been warm. Not freezing either, I guess you can say semi cold water :( . Now I am considering getting a water heater to make them healthier and maybe grow a little. But will the temperature change that they are not use to harm them more than help them????[/b]
Go buy the water heater. It will heat the water gradually so they won't notice it. It's very important to know the water and basking temp so go get a thermometer if you don't already have one.
The things that come to those who wait may be the things that were left by those who got there first - Steven Tyler
Those actually aren't a good way of measuring the water temp. They can be greatly influenced by the room temp outside the tank rather than what's inside. You can buy a cheap plastic aquarium thermometer with a suction cup on it and put it in the water.
The things that come to those who wait may be the things that were left by those who got there first - Steven Tyler