I use a large 18 qt plastic container (depending on dragon size) and fill it with 1/2 to 1 inch if luke warm water. The water should not feel the slightest bit hot. Do not leave the dragon unattended. You dont want the water going higher than 1/2 way up their legs. They will usually drink, and some like to poop in the warm water. In that case, dump it all out and start a new
bath. 3 to 10 minutes is great. I
bath them instead of using water dishes (they like to poop in those) 2 to 3 times a week.
Jeff