Are dual-dome fixtures safe for running a UVB bulb next to a heat bulb?

With caveats. Several r/reptiles threads we read flagged dual fixtures where one socket cooked an adjacent UVB bulb within days, and verified-purchase reviewers report similar failures. The fixtures themselves are generally fine, but specialist commenters emphasize that you must respect the per-socket wattage rating, avoid pairing a high-wattage heat bulb with a heat-sensitive compact UVB in close quarters, and ideally use a long T5 UVB tube instead of a compact UVB in a dome.