Hi,
I have a baby turtle whose scutes at the end of his carapace is turning a bit white and spreading. He basks under a 75 watt incadescent light bulb as well as a Reptisun 10.0 full spectrum. I noticed one scute turning whitish a while back but didn't think much of it since he's got a good staple diet (Reptomin and vet-recommended Jumbo-min), clean water, and good lighting.
Can anyone tell the difference between soft shell, fungus, or just mineral deposit buildup? I think the water is hard around my area, but his other tankmates don't seem to be affected. In addition, I tried to scrape off the whiteness off the scutes, but they don't seem to be coming off and therefore I don't think it is fungus. I keep the window open so that natural sunlight can come in, although it gets blocked by mosquito netting.
Thanks.
Johnny

