I got a pacman frog from petsmart a weekago. He was set up with a plastic 5 gallon style tank, coconut fiber substrate, a shallow water dish, a mini heat pad on the side, and a light by the tank to keep the ambient temps up (it wasnt directly on it or anything, but close enough that it was warm around it. I misted it at least once daily, and I put clean, dechlorinated water in his dish everyday too.

He was happy all week, ate about 3 small crickets a day and a meal worm here and there. Last night he was jumping around like crazy and when I woke up he had displaced a lot of his substrate to the middle of the tank. I cleaned it up and he looked fine. After I got back from classes I found him dead, black, and shriveled up by the heat pad side of the cage. My roomate said that 2 hours before that he looked fine and green, but she also said a little later his legs were red (so Im assuming it must have been red leg disease).

Can red legs disease attack and kill a frog in such a short duration (under a day, or even in a few hours), and do you think I did anything to make this happen?