I am a beginner. I have 4 Fire Bellies in a 39 gal terrarium with a waterfall. 3 inches of water and a hiding log. The temp is set around 70-75, the humidity is between 40-50%. I feed every two days. These guys are crunched in the corner of the terrarium on top of each other. they rarely get in the water. Whats up!? Help!!!