Exo Terra Halogen Basking Spot Lamp

• Halogen filament for a brighter, whiter basking light than a standard incandescent spot bulb
• Combined infrared-A and infrared-B output for deeper heat penetration
• Small UVA component to support natural colouration and behaviour
• 40° beam angle concentrates heat into a defined basking zone
• Standard E27 screw fitting for dome and clamp lamp fixtures
• Four wattages – 50W, 75W, 100W, 150W – to suit different enclosures

Fitting: standard E27 (Edison screw), for a ceramic or heat-rated dome or clamp fixture. Mains supply: 240V/50Hz (Australian standard). Does not emit UVB.

Wattage sets how hot the basking zone gets and how far the heat reaches, not just how bright the bulb is. Use the heat gradient table below with your target basking temperature and available mounting height.

• 50W – gentle heat, down to the low-to-mid 20s°C by 41–61cm; smaller enclosures or lower basking needs.
• 75W – holds above 50°C to roughly 30cm, still 27–30°C at 51–61cm; medium enclosures.
• 100W – same close-range intensity as the 75W but hotter further out (33°C at 61cm); larger enclosures or high baskers.
• 150W – the highest-output bulb in the range. Exo Terra has not published distance-specific data for this wattage, so mount with extra clearance and confirm with a probe thermometer.

Suitable for reptile, amphibian and invertebrate basking zones needing a bright, focused daytime heat source, including desert and arid-habitat species that bask at high temperatures.

Not suitable as the sole overnight heat source for nocturnal species that need darkness – Exo Terra separates day (halogen/daylight) and night (infrared) basking bulbs for this reason. Not suitable for use outside a properly heat-rated dome or clamp fixture.

Exo Terra publishes temperature-by-distance data for the 50W, 75W and 100W bulbs, measured at 20°C (68°F) ambient:

Treat this as a guide, not a guarantee – ventilation, room temperature and fixture type shift the actual numbers. Confirm the basking surface temperature with a thermometer or thermostat probe after installation. Distance-specific data for the 150W bulb was not available from Exo Terra at time of writing.

Let the bulb cool fully before handling. Avoid touching the glass with bare fingers when installing – skin oils can shorten bulb life or cause the glass to fail; use a cloth or the packaging sleeve. Keep the bulb and fixture free of dust and substrate. Replace if light output dims, it flickers, or it fails to strike.

This is a 240V/50Hz mains-powered heat source. Install it in a fixture rated for the wattage in use, mounted clear of enclosure mesh, decor, foliage and other flammable material. The bulb surface runs hot – do not touch it while lit or shortly after switching off, and position it so animals cannot make direct contact. Exo Terra recommends a dimming or pulse-proportional thermostat over a plain on/off thermostat for heat bulbs, since on/off cycling stresses the filament and can shorten bulb life; a thermostat also guards against overheating if the bulb is left unregulated.

A dimming or pulse-proportional thermostat, to regulate basking temperature and protect the filament. A dedicated UVB tube or bulb, since this halogen bulb supplies heat and light only, with a small amount of UVA. A ceramic or heat-rated E27 dome or clamp fixture sized for the wattage in use.

Covered by the consumer guarantees under the Australian Consumer Law. Contact us if the bulb arrives faulty or fails well short of a reasonable lifespan, and we will sort out a remedy in line with your rights under the ACL.

Does this bulb provide UVB?

No. It provides heat, daylight-spectrum light and a small amount of UVA, but no UVB – pair it with a dedicated UVB lamp if your species needs one.

What fitting does it use?

A standard E27 screw fitting, for a ceramic or heat-rated E27 dome or clamp fixture.

Can I use it with an on/off thermostat?

You can, but Exo Terra recommends a dimming or pulse-proportional thermostat for heat bulbs, since on/off cycling puts more stress on the filament.

Is the 150W bulb covered by the same heat gradient chart as the others?

Not currently. Exo Terra has published distance-specific data for the 50W, 75W and 100W bulbs, but not the 150W. Mount it with extra clearance and verify the basking temperature with a probe thermometer.

Can I run this bulb overnight?

It is a daytime basking bulb. For overnight heat that will not disturb a nocturnal photoperiod, use an infrared basking bulb instead.

How far should I mount it above the basking point?

There is no single figure – it depends on wattage and target temperature. Start from the heat gradient table for your wattage, then adjust and confirm with a thermometer.