The main question is can Crush suffer from shock? So this friend, she didn't take that proper of care of him, at least based off the research I've done. She doesn't heat the water, she keeps it at room temperature (around 72F), she doesn't feed him veggies, and the little device that creates a current in the water (i don't know what it's called) is close to the bottom of the tank, so he often gets stuck underneath. The 35-ish gallon tank is very simplistic, with just a halogen light bulb, a desk light (I turned this on, because since I haven't been able to get to the store yet, hoping the heat would help), the current thing, some rocks, and a 305 canister water filter.
I was wondering, since he's already a bit stressed from getting a new home (he moved in yesterday afternoon), would it be too much for him to handle if he got the water heater and all? I know some fish can die from shock, and though I know turtles aren't in the same class as fish, too much stress could definitely cause damage, right?
So far, I've fed him a couple of green/red lettuce leaves (he took some bites out of it & he seemed interested, but he didn't eat it all), some Reptomin pellets & like 5 of those tiny freeze-dried crickets. She said that she would send a floating dock (for basking), but I'm scared he might need it sooner than that, and what about the UVA/B light, he doesn't have that either. I'm really nervous for him, because though he might've lived in these conditions before, I don't think she should suffer any longer.
He's sitting at the bottom of his tank, not really doing much. I put a lettuce leaf every once in a while so he will be inspired to swim, but this can't be good. He's also having some trouble swimming to the top of the tank, and even against the current some times.
Please send me any advice you can give me!! I want to help him have a happy life, but I know change will probably be stressful

