I have had my Bearded Dragon no lie for about 12 to 13 years. I have been using the same UVA and UVB and substrate for the length of time hes been alive. The other day I was doing a sand change and gave him a bath. He was doing fine in the bath jumping around having fun as always and after he was done I put him back in his tank obviously. The next day I noticed his skin began to whiten and he became very ill or really unreponsive and tired. He would not eat...nothing. This morning I woke up and found him fallen off his basking spot so I rushed to the tank to see if he was ok and he was still breathing very slowly and will not open his eyes at all. I have never ever seen him do this before...I was thinking that he is so old that maybe the stress of the sand change or the cleaning got to him I don't know. Again I have used the same things for years and have never had any problems. Please help!!!