I was thinking about some of the problems that frogs/froglets develop, and was thinking about UV lighting. As I understand, many people do not provide this, especially since it is lost when absorbed through glass/plastic/fiberglass. I was wondering, how much exposure do they need for best calcium absorbtion? If it's something in the area of 15 minutes, would it be possible and/or useful to switch the lid of the aquaria with a large mess screen and shine the light in for a period, and then switch back to the humidity-holding cover afterwards? I was just wondering if this would lead to healthier frogs when combined with supplimentation.