I was just wondering how warm is too warm for the water to be. My house has been getting really hot lately and even though I only have the water heater set to 79 the water was 84 today. I have a 50 gal tank that's almost filled all the way so there isn't much I can do to bring the temp down. So what would be considered "danger zone" temps?
My other question is about my turtles shells. They like to rub their shells up against parts of the filter. I was wondering if this was because they are itchy. One of my turtles lets me scratch his shell all the time and he even rubs up against my nails. Is this normal? Do growing shells cause itchy discomfort? Just wondering. 
Thanks

