Thank you for your response. I should have posted on here about 8 or 9 months ago when he started turning dark but he has always retained his weight, gone back to what i would call a partial green, and eaten well. I didn't think much of it since my other toads change dark sometimes, but ALWAYS go back to normal after a few days. But Master Bellatinizer just recently began losing mass though and seldom eats. Most of the time now he misses his food and gives up. That is what scares me.
As for the water, it is bottled Spring Water. I will get a filtration system if that is what I need. I will wait to hear back regarding how frequently I should be changing the water.
And for the supplements, I used to use them a LOT LOT and I was warned that liver damage can occur if used too frequently, so i got paranoid and cut down quite a bit.
But what about his constant mouth popping? He opens his mouth and closes it real fast, several times a minute, especially when i hold him, as if his jaw is bothering him or something. And what would cause his chin to stop doing that up and down motion? I call it chewing gum because i don't know the proper terminology, and he does not do that anymore and I have never seen a frog or newt NOT do that. I really hope he isn't in pain, and I have no way of knowing..??
I will put him inside the temporary holding tank I have. I am picking up crickets tomorrow anyway so I will watch for poop when he eats, if he does.
Thanks.