Help me please I have a 35 gallon aquarium and this is where I house my fire bellies, I lost one a couple of weeks ago with no outward appearance, I immediately took everyone else out and cleaned the entire cage I even boiled the rocks to kill any bacteria that cold have caused this. Then they all seemed fine. Yesterday when I fed them I noticed that one was sitting with his legs stretched out as they sometimes do in the water but he was almost in the land part of the slope, I didn't see him specifically eat but he looked ok other than that. Then this morning he looked dead dried out looking just s the other one did. I have worked n the pet industry and keep a variety of animals healthy and this has me baffled. As I said there has been no outward apperances of sickness, just fine and then dried up and dead looking..(dead) Please help me I don't want to lose any more frogs.. I don't understand what is wrong!!