That's great advice (I have a Solarmeter, purchased after a fatal and very dumb user error incident).
For complicated reasons relating to the vitamin D degradation feedback loop, as well as the UVA-based mechanism of exposure self-regulation that at least some herps use, I personally am very skeptical of LED UV lamps at this very early point in their development. Their spectral curve is nowhere near the natural sunlight curve that degradation and self-regulation work in relation to.