I noticed this bulb on amazon at a great price that it appears people are buying to use as a uvb bulb, as that is what it's advertised as, but I don't see any mention of it being self ballasted, wouldn't it have to be in order to be a mercury bulb that produces uvb?
https://www.amazon.com/Reptile-Reptiles-Sun-Like-Bright-Amphibian/dp/B08CZ43DNP/ref=pd_sbs_60_5/136-5756523-7221948?_encoding=UTF8&pd_rd_i=B08CZ43DNP&pd_rd_r=b03c105d-7420-4bf7-87fb-ded1dd50b35a&pd_rd_w=SX5nG&pd_rd_wg=XahDn&pf_rd_p=703f3758-d945-4136-8df6-a43d19d750d1&pf_rd_r=DPMXKPVV40E4M8BZPJKY&refRID=DPMXKPVV40E4M8BZPJKY&th=1
https://www.amazon.com/Reptile-Reptiles-Sun-Like-Bright-Amphibian/dp/B08CZ43DNP/ref=pd_sbs_60_5/136-5756523-7221948?_encoding=UTF8&pd_rd_i=B08CZ43DNP&pd_rd_r=b03c105d-7420-4bf7-87fb-ded1dd50b35a&pd_rd_w=SX5nG&pd_rd_wg=XahDn&pf_rd_p=703f3758-d945-4136-8df6-a43d19d750d1&pf_rd_r=DPMXKPVV40E4M8BZPJKY&refRID=DPMXKPVV40E4M8BZPJKY&th=1