I work at a pet store and my responsibility is to care for, feed and monitor the animals. We have had an AFG for about four months now, and it did not seem very active from the start. The enclosure is only 5 gallons, with coconut fiber substrate (yes I know impaction is an issue and I am considering bark as an alternative for we have few options) and his humidity is at about 15%. His temp is about 80 during the day, 70 at night. Now that I have been researching the animals in depth, I have taken to spraying his substrate lightly every other day or so, though not the gecko directly. He is given 1-2 large vitabugs every day. I have noticed feces occasionally but it seems like he barely eats at all. I noticed about a week ago that his tail is very thin now and I have never seen him leave his hiding. I am seriously considering requesting a vet visit tomorrow. Any extra tips?