I've only ever kept 4 turtles but have rescued, revived, and released many. Most turtles from your place of living are completely fine. Maybe a push in right location of water is a great thing to do. Sometimes people have brought me a turtle from out of state to care for because they couldn't and it was dying. Please don't do this, it's illegal for most part and it doesn't help the turtle. Just direct it in its appropriate direction as strong will survive...another is petstores...." wanted it and now have no interest and I want it gone"...ok but not in the middle of winter...here in Ohio red eared sliders are fine to have fine to go to wild but the one you got from store needs to know how to be wild. Definitely don't set out in winter!! Please that's how I got 2 of mine sorry for being dramatic. They live for lots of years. Ertle is around 19yrs old and still perfectly active. If you have an aquatic turtle and are aggrevated of its dirty tank then give it more water,a filter ,air of sorts then water changes. It's really easy to get a clean turtle tank even though they are probably #1 on dirtiest list. I can help with this issue if anyone has it ๐