Hi,

since I do live in Germany, the availability of differetn brands may differ from the situation in the US. In principle, metal halides are still the only way to provide basking spots at absolute natural light intensities. Spectra are typically very sun lie, UVB output is anyhow not too strong (with exception of some chinese brand and the german lucky reptile bright sun UV). You need a safety glass to be sure not to get any UVC. Also quite important is the reflector type. For tall tanls alway go for spot like types. With respect to bulbs, fixture type does not matter much. But go for light temp between 4000 and 5500 k and a caramic based technology like HCI, CDM-R or CDM-T.
For my adult basilisk tank I do have installed a couple of T5 fluorescents plus 2 x 70 W HCI and 1 x 150 W CDM-T.

Hope that helps

Ingo

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