Posted: Mon Mar 24, 2008 7:07 pm
How big is your RES? A constant 85F is a bit too warm even for a sick RES. If your turtle is healthy and an not a hatchling, he should do fine with temps in the low 70s (my RES stays in water that's around 70F, except in the summer, which it's a struggle to keep the temp down). 78F for a small hatchling is good.
You didn't say where you are, but are you asking because it's warm where you are and the water temp is going up?
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-