I have 1 year res. He is about 4 inches. (my other one same age is about 6in) Since last Thur he has been "seizing" whenver he basks on the rock. His head and legs spasm uncotrollably in all different directions. This last for a minute and then he sits for a min more and then is ok. He only does this on the rock not in the water.
Basking light over rock with uvb light next to it. It is a 30 gallon turtle kit bought from the store with filter, lights, and gravel. There is no heater.

