Posted: Sat Jul 01, 2006 2:00 pm
Tris, I think that's a guideline for the minimum amount of water a turtle should have (some say a bit more than the width of the shell, which, for a small turtle is about the same) is so if a turtle tips over he can right himself easily.
More water is better, however, I think that if a turtle is really small (newly hatched up to a few months of age, for example), they seem to prefer shallower water (or at least it seemed so with my turtles) than really deep water (i.e., just filling up the tank to a level where they can't escape), at least in the beginning. They can quickly adjust to deeper levels, however, especially if they have objects such as fake plants or ledges to rest on (in addition to a basking area).
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-