The solar glo bulb is exo terra's version of the powersun. Its an MVB that will provide heat and UVA/UVB...when measured under a light meter the MVBs seem to put off more UV than the tube lights, however IMO you are only getting your UV on the basking site. Many people.love them however I use flourescent fixtures that run the length of the cage for my UV. Either way should be fine though.
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