Hi Daniel, if the basking light is red or black then it would be okay. I meant to say bright light can stress the geckos out and therefore it's not recommended. Thanks for asking for the clarification, my fault for not making it explicit. Leopard geckos won't need a heat source over 90F. A UTH and an ambient temp of mid to low 80s will be ideal. Comparatively, leopard geckos requires a lower temperature than most desert lizards such as bearded dragons.