please help, my long neck turtle is ill, he is about 8 monthes old, and has recently been off his food, sleeping pretty much all day, has white spots all over him, eyes are puffy, seems to feel itchy. tank is cleaned weekly thoroughly, please help.
You say the tank is cleaned weekly, is the water filtered in the meantime?
If you have an adequate filter then you shouldn't need to clean the tank every week, do you treat the water or just use untreated tapwater?
It's hard to diagnose anything without a photo, but this sounds like it could be a skin infection or skin fungus, something like that which would be caused by poor water quality, that could also account for the puffy eyes, but then so could chlorine in untreated water.
Some more info and some good clear photos of the turt and it's setup would really help.