So I work at a high school and the science teacher order a tadpole at the beginning of the year. Long story short, it ended up in my office and I took over care taking responsibilities. He/She was a tad for about 2 1/2 months and then turned into a baby froglet. Now he/she is a baby frog and I think that it is a gray tree frog but I am so new to this I would like some confirmation by some people who have experience. The tadpole was sold under the name of being a "Green Tree Frog" but to me it more resembles a gray tree frog. Pictures below, check them out and let me know! Much appreciated! He is very cute! Just to add a few details you might not be able to see. He has white markings under both his eyes (which I heard was a Gray Tree frog thing, but then I read conflicting things online, so I was not certain), he does not have orange on his hind legs (yet, maybe that will come), he changes from very light almost neon green to dark almost brown during the day. Let me know what you guys think! Also if anyone could tell me the best type of water to give these guys to soak in. I have heard spring water (like bottled water I am assuming?) and treated tap water? Which one should it be? I was using distilled for a while after tadpole metamorph but then I read that they need more of the minerals from spring water. So if anyone could add that answer in, that would be great as well.