Hi all, I'm after a bit of advise really.

One of my frogs has been acting different to usual. About a mont ago I put an exo terra waterfall in the tank, and both frogs loved it, they would bask there all day!

Now recently, the tank is looking a bit more bare than normal, as I use a lot of live plants and a few of them have died off recently. My one frog keeps hiding away. As soon as I open the tank he immediately hides behind the waterfall. Then the other day he went missing, and I thought, maybe he's hiding inside the waterfall and I found him in the water, which was quite deep, looking as though there was a struggle. I pulled him out then he threw himself to the ground and just laid there.... I was scared that he was dead or something, I scooped him up and then he started breathing... And now he'll do anything to hide away under there. I put him on the plant up by the basking light where my other frog pretty much lives. But for some reason he always heads back to the waterfall.... I really don't know what to do. I took him out and had a look over the best I could, I couldn't see signs of illness. I'm thinking he may be stressed because of the lack of privacy in the tank now, but my other frog is happy as larry in there. :/