actually i wrote a summary on UV-radiation with everything i could find in the internet ( if you want take a look into the science clickbait in my signature ).
There was one thing that all scientific papers said and that was that UV-B has no influence on CBD.
If i am wrong, maybe you got a source for that so i could read it?
also i would not use a reptile lamp to get UV-B-radiation but thats a different story