Ok so i got home today and for the first time EVER i notice one of my snakes soaking, here she is all comfy in there...

Now...i checked her for mites or any little bugs crawling over her and she looks clean and i checked the water and theres just little particles of the reptibark. She also looks like she might be starting to go into shed because her stomach is pinkish. As for humidity and heat, he tub stays between 50 - 54% humidity with a cool side of 78 - 80 and the warm at 92 thermostat controlled. Do they just randomly soak?