Sorry but I've never used forums before so I don't know the etiquette / how to Like stuff. I don't use social media.
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Honestly the most important aspect of a first check up is taking in a fresh fecal to run for parasites. With you buying him at an expo this would be the first thing I would do.
There’s still no explanation for why he’s digging, unless he’s trying to get out for some reason. Keep a close eye on his temps and humidity and start planning from now his big boy upgrade. You can probably still get a great price for a ReptiBreeze at somewhere like PetSmart, if you haven’t already. (I can’t remember and too lazy to go back to look). I do hope you’ll keep posting updates and pics of your cutie. 
How do I reduce the temperature by 3 degrees in the enclosure?
I have posted a lengthy update!So very glad that he got a clean bill of health from the vet and that you may have found his preferred way to eat. Fill that little cutie up with whatever it is he’ll eat. For his size I wouldn’t give anything larger than about 1/4” size. At 9 Gm, he’s got a whole lot of growing to do.
I use small wire baskets that I get from the dollar store to achieve this. Usually a pair of the long slender drawer organizer types are perfect for this. If you need more height, just stack them.
Reduce overall ambient temp or basking temp? Basking temp you raise the fixture up off the top more. For ambient you have to reduce what you have your house heat set on to help bring down the cage temp.
My wife has asked if you'd be willing to upload a photo of the wire baskets and how you've set them up?
I naturally run super hot so I keep the heat off almost always. Ambient temp in the house is between 70-72 most of the year. In summers it's 76 because we're in SoCal.
Hey by the way, are you the woman who runs the Neptune channel? I thought she was a member here but I'm not sure. I'm planning on scheduling an hour-long call with her this week, but I realized I should ask if she is you first because you've already imparted your advice.So very glad that he got a clean bill of health from the vet and that you may have found his preferred way to eat. Fill that little cutie up with whatever it is he’ll eat. For his size I wouldn’t give anything larger than about 1/4” size. At 9 Gm, he’s got a whole lot of growing to do.
It depends on how you are determining basking temp. For example if you are doing it with a probe at the basking branch and that is reading 84 then where the cham rises up would be more like 86-87. If you are doing it with a temp gun these only measure surface temp and I find them to be very inaccurate compared to a probe. For a baby as young as yours I would not have basking exceed 82 meaning what their exposure is where they rise up. So it would be 80-81 max at the branch with a probe.
The only time I’ve seen one of mine digging (aside from egg laying) was when still at Petco and the only reason for it that I could think of was she was trying to find an escape. Most of mine do like to hunt their isopods, but they lay in wait and ambush them when they see them…never digging for them. My one girl will hang upside down by her back feet and tail, waiting to catch an isopod. Maybe try putting a nice thick layer of leaf litter over the substrate. I also put some decent sized scraps of cork bark for the clean up crew to hide under. You could see if the dark on his face wipes off at all. Mouth rot will show dark or discoloration along the mouth line, but often there is more than that, like erosion or a wound. Definitely monitor his eyes. Hopefully whatever will make its way out on its own. 68F is a good enough cooling down to run a fogger, for at least a couple of hours. If temps get above 70F at night though, that wouldn’t be advised to do.
As high as you can get it. In the wild they are getting cool and very humid nights from thick fog, which is hydrating. While this video is from Madagascar, it does show just how much moisture is in the fog at night.
