Hello I've had my baby leo since the beginning of June. I've had two geckos in the past. One was a african-fat tail that I had to give away. And the other was a leo I adopted from a friend and she was very malnourished... I nursed her back to health thankfully but had to give her away to a friend because I had to move from the east coast to west coast. So this is the first time I've bought a leo myself, and the first time I've gotten a herp newborn at that. My past geckos were both adults. But anyway, his name is Hewitt and he is my favorite thing in the whole world. But I was having some trouble lately and I wanted to ask. Firstly, I have an under-tank heater for him. I've been monitoring the thermostat in his terrarium, and the temp fluctuates between 70 and 75. I'm thinking this can't be good, and I don't know why it does this. I know it should be between 75-80. What I was wondering is if anyone can recommend a specific product that I could get as a secondary heat source to help with the fluctuation? I don't want the temp above 80. Secondly I want to talk about Hewitt's tail girth. I don't think he has stick tail disease or anything like that, but I'm afraid it should be a lot thicker than it is. I know fat is stored in the tail, and a thinner tail is usually a sign he needs to eat, but he eats every day. I always have crickets in his terrarium at his disposal whenever he wants to eat in the evening, since I sleep and I'm busy so I can't always be home to feed him. I house his crickets in a carrier and they have water and vitamins and supplements before he consumes them. I took him for a check up a few months back, and the vet says he's perfectly healthy. The doctor told me he should eat about 3 crickets a day. I've included a picture below. I'm wondering if his tail being a little thin has something to do with the heat problem, because maybe he's not digesting properly? But he hasn't regurgitated and his poop is normal. I'm also wondering if maybe his age is part of it. I know his tail is not going to be super thick since he's just still a baby, and he's quite small as you can see, but I'm not sure what to do.