Hank my male RES is around 8". Millie my Sideneck is about 11". She's pretty large. But Bitsy is my concern right now.
I rescued Bitsy a year ago when my Bearded Dragon rescue friend saw her being kept in a small 5 gallon fish tank when rescuing a Beardie and convinced them to let her take Bitsy as well and she called me since she didn't have a turtle setup. I have Bitsy set up in a 20 gallon tank by herself due to her size. I know my 2 larger turtles would kill her. This was a year ago. I assumed she was a fairly young hatchling and would grow pretty rapidly and probably be around 4" by a year old. But she doesn't seem to be really growing. I don't have a GREAT reptile vet in my area but have an OK one that saw all 3 of my turtles about a month ago. He said they all looked healthy and had no comment about her size. She was about the size of a quarter or a bit smaller when I got her. Now a year later she is MAYBE the size of a silver dollar. Not sure she is even that big.
I keep her tank water about 80, her basking spot is around 5 degrees warmer. I tried keeping her tank cooler at around 75 but she wasn't eating well, when I turned the heater up a tad to keep it around 80 she regained a good appetite, so I've been leaving it at about 80. I'm not sure how to upload photos, hoping this image works. Took this tonight to show her size next to a nickel since that's the largest coin I had in my purse.

Should I be worried about her size? What could be causing her lack of growth? Could it be related to how she was being kept before I rescued her? She acts healthy and eats well, she is just remaining tiny.

