So as the title says, recently one out of the two baby RES that I own has been acting strange lately and I think it may have been due to the fact that my grandma gave them a little bit too much lettuce? I am not sure as they were fine the morning of that day when I looked at them, but she told me that she fed them a bit of lettuce and that squirtle ate it all up really quick.
I go in to check on them and i noticed squirtle just clinging and floating on my tree decor. He would always come swimming to me whenever I walked in the room but this time he had no reaction and just stayed put. He had a bit of a thrusting motion in his neck when I picked him up and I wasn't sure if he had a RI but just to be safe I put him in a separate tank with a heater at 84F overnight. The other RES is perfectly fine and very active.
In the morning I saw that squirtle pooped a lot and that he was swimming a bit more so I put him back into the main 10-gallon tank which has a good filter, heater, and a UVB lamp with a basking area that is around 86-92F. I usually give them two pellets each once a day for 4 days and greens the other 3 days.
Once he was back in the tank he started to be inactive again and hid next to the tree. If anyone can give me some advice on what they think is going on I would really appreciate it. I'm only 6 months into turtle keeping so any tips about how to further care for them would help me a lot.