The ReptiSun T5 HO 5.0 is Zoo Med's high-output linear UVB tube for reptiles with low to moderate UVB requirements — aquatic turtles, tortoises, iguanas and chameleons in wide, terrestrial enclosures. It emits 5% UVB and 30% UVA. The useful range is limited: past about 55cm from the tube the UV Index drops below 0.4, so a tall enclosure or a desert basking species is better served by the 10.0 version.
Features
- 5% UVB, 30% UVA — supports vitamin D3 synthesis and calcium uptake.
- High-output T5 format — carries usable UVB further than the equivalent T8 tube, and lasts 12 months rather than six.
- Four lengths — 30cm (15W), 60cm (24W), 86cm (39W) and 116cm (54W).
- Made in Germany.
Getting the distance right
Measured from the tube, UV Index runs roughly 2.6–3.5+ at 8–13cm, 1.0–2.6 at 15–25cm, 0.7–1.0 at 30–40cm, and 0.4–0.7 at 45–56cm. Mounting above a mesh screen cuts UVB by 30–40%, so allow for that when setting basking height. Glass and acrylic block UVB entirely — the tube needs a clear line of sight to the animal.
Replacement
Replace every 12 months. The tube keeps producing visible light long after its UVB output has faded, so go by the calendar rather than by whether it still lights up.
Pair it with the ReptiSun T5 HO Terrarium Hood, or see the rest of the range in Reptile Heating & Lighting.
