I have 3 african dwarf frogs in a 5 gallon tank. They seemed to be doing really well, but one morning when I checked on them one was floating belly up at the top of the tank. I thought that he was dead so I went to remove him and he moved a bit. I tried to feed him, he would not eat. His eyes were pretty cloudy too. The next day he was dead. We replaced him and then had a second frog with the same symptoms die. If anyone has any ideas, please help us not lose another one. Thank You!!!