Do you think it's better to use a mercury vapor bulb or a heat bulb with a t5 uvb tube? Idk such method to use.. which one is better for my beardies' health and the better bang for your buck? He's currently in a 40 gallon tank
Either is a good way to go, if you stick with a quality brand. I like tubes so I can control light and heat separately. MVB sometimes require extra heat bulbs anyway, and can't be dimmed or adjusted like a basking bulb would.