Hi. You need a heat bulb as well as the linear uvb. You should have pretty easy access to Arcadia products, which are great and UK based. Posting a pic of a great light. The uvb strength should be 6%. In addition, Arcadia makes some supplements too. You’d need 3 different ones…Earth Pro A, Calcium Pro-Mg and Revitalise D3. I’ll attach the schedule for those below.
Unfortunately, many don’t realize how expensive it is to keep chameleons and there is so very much bad information out there and being passed along about improper ways to keep them. I don’t believe that your girl was just digging to check out the situation. It takes a lot of energy for them to dig and I don’t believe they would waste it if they weren’t ready to lay.
To help get your Mom’s help, do ask her for a few minutes and have her read thru this thread. You could also show her this.
https://chameleonacademy.com/veiled-chameleon-care/ Giving the paraffin will be about as helpful as it would to a human woman having trouble giving birth.
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