Hi,
Sounds like you care about this guy and glad you are willing to make some changes, here are a few more:
1: Chams really do not need any substrate, in fact it can be quite detrimental b/c it can harbor fungal spores and bacteria which are airborne and your cham could be breathing in.
2: you will definitely need to monitor temps and humidity. I suggest getting a good digital gauge (not the little cheapies in pet stores). Home depot carries one that measures both for about $18, but it is only a rough gauge or actual temps. A heat gun is a worhtwhile purchase (about $25). He should have basking of about 90F and should have at least a 10degree drop at night. Keep in mind that b/c he is in glass the temps and humidity can get quite high. Once you have him in an all screen cage (minimum 2'x2'x4') it will be a bit more difficlut to regulate temps - especially humidity - but is crucial. It will take some adjustments. If you live ina cold region the winter can get tough to keep temps up but many of us have devised some rather simple and efficient solutions.
We can help you with the rest of your setup and care if you could answer some questions. Got to the link below and to the "Questions" section. You can copy and paste it right into a post and answer the best you can. Also, look at links on that site for some recommended reading.
As for the tail - see a vet. Do you have one?? There are links to them by region, state, province, etc. on that same page below).
Hope this helps!
lele
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Chameleon Help & Resource Info
0.1 Veiled Chameleon - Luna. She's now hanging from her big jungle gym in the sky
1.0 Beardie - Darwin
0.2 felines - Kyndra and Lita
0.1 African Clawed Frog - Skipper
0.3 Mad. Hissers (2 died ;(
0.1 Chilean Rose Hair Tarantula - Rosa Leigh
0.1 Goliath Bird-Eater Tarantula - Natasha
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