I've had my red eared yellow bellied slider (I was told she was both and she looks like it) for about a week now. Her water temperature stays at about 78°F or 26°C. She has a basking spot that she can get on. I'm also getting a UVB bulb this weekend. She's a little over a year old and very active. She has a basking light but I was told to turn it off at night to mimic the natural light outside. Even when I turn off the light her water temperature stays the same because I have a heater that keeps it at the right temperature. I feed her pellets, the brand ReptoMin, and I'm also getting her guppies this weekend.
I got my turtle from my cousin who didn't want her anymore. When I got her her tank was too small and she wasn't properly being taken care of. So when I got her I got everything she needed. My cousin also told me that every now and then she sneezes. This is my first pet turtle so I thought it was a quirk until I did more research.
My turtle started sneezing again today. She's done it once or twice this past week. She's also shedding, that's what it looks like anyway. It's only on her skin. Unfortunately she does not have a filter at the moment. We bought one but it didn't work right so we're returning it and getting her a new one tomorrow. In the mean time I'm cleaning her tank every day.
I'm not sure if the sneezing is normal or an infection. She's eating very well and she's very active. She's not yawing or anything. But she swims well and there's no mucus when she sneezes. I'm worried about her (since I've never had a turtle before I'm probably a little more worried then I should be). I love turtles and I want to make sure she's taken care of properly. So any advice on what this could be or what I could do to help her would be very much appreciated. Thank you.

