I think I was tired.

What I meant to say was this: In general, a heat pad is enough for a leopard gecko, unless the ambient air temps start dropping below 65. Then you may want to also heat the air a bit. That is true for screen top cages.

If you use a cage without a full screen top, then the heat and humidity hold better, so a heat pad is often enough, even when air temps get cool.

Heat pad kept at 85-90 range seems to work well.

If you use a screen top cage, then in cool times consider covering the top partially.