Exo Terra Daytime Heat Lamp. A broad-spectrum daylight lamp with a Neodymium sleeve. The spectrum is ideal for plant's photosynthesis and the UVA (ultraviolet A) light contributes to reptiles' physiological well-being. Another important factor is the heat emitted by this bulb to increase the over all ambient temperature in the terrarium. Broad-spectrum daylight lamp for terrariums Creates heat gradients for thermoregulation Increases ambient air temperature Stimulates breeding behavior through UVA rays Can be combined with Night Glo or Heat Glo for a 24 hours cycle The Exo Terra Glow Light (PT2052 / PT2054 / PT2056) is perfectly suited for the Exo Terra Incandescent Bulbs. The 25 Watt, and 40 Watt bulbs are T10 incandescent bulbs. The Daytime Heat Lamp is available in 6 sizes; - PT 2102, T10 bulb, 25 Watt - PT 2104, T10 bulb, 40 Watt - PT 2110, A19 bulb, 60 Watt - PT 2112, A21 bulb, 100 Watt - PT 2114, A21 bulb, 150 Watt