SKU: 4281266568

Reptile UVB Pro 300 T5

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Description

Reptile UVB Pro 300 T5For Open & Mid day sun baskers Long lasting Very High Output (VHO) UVA & UVB light Unique phosphor blend replicates solar UVB Suitable for animals basking in open or mid day sunlight UVA rays stimulate appetite, activity and reproductive behavior UVB helps prevent Metabolic Bone Disease Helps promote healthy Vitamin D3 synthesis Maximizes calcium absorption Replicates vital parts of the sunlight spectrum. Superior UVB penetration, ideal for tall

For Open & Mid-day sun baskers

  • Long lasting Very High Output (VHO) UVA & UVB light
  • Unique phosphor blend replicates solar UVB
  • Suitable for animals basking in open or mid-day sunlight
  • UVA rays stimulate appetite, activity and reproductive behavior
  • UVB helps prevent Metabolic Bone Disease
  • Helps promote healthy Vitamin D3 synthesis
  • Maximizes calcium absorption
  • Replicates vital parts of the sunlight spectrum.
  • Superior UVB penetration, ideal for tall terrariums
  • Recommended for use with the T5 Terrarium Top

The Exo Terra Reptile UVB300 is specifically tailored for reptiles that thrive in environments with intense, direct sunlight, such as deserts or open savannahs.

With its 14% UVB output, this bulb delivers the highest UV intensity among the T5 series, meeting the needs of reptiles requiring high levels of UVB exposure. Supporting Ferguson Zones 3-4 and the Euphotic and Heliophotic Zones, it provides the UVB necessary for open and mid-day sun baskers. The UVB300 is critical for maximizing vitamin D3 synthesis, which is essential for robust bone growth, healthy shells, and preventing metabolic bone disease (MBD). This bulb is ideal for large enclosures or terrariums with minimal shading, replicating the intense sunlight found in arid and semi-arid regions. Its high UV output ensures reptiles receive adequate exposure even at greater distances from the bulb. To avoid overexposure, the positioning and distance from the basking area should be carefully considered. When used alongside basking lights and proper thermal setups, the UVB300 creates a complete and enriching environment that supports the health and natural behaviors of reptiles in high-UV habitats.

The innovative Sunergy™ phosphor blend sets Exo Terra’s Reptile UVB T5 lamps apart. Sunergy™ is a state-of-the-art phosphor blend developed using German precision technology to replicate the energy spectrum of the sun, particularly in the UV range. This cutting-edge blend comes closer to natural sunlight than any other lamp on the market and is designed to meet the highest standards, delivering unmatched quality and performance. With Sunergy™, Exo Terra’s Reptile UVB T5 lamps provide reptiles with the UVB they need for health, vitality, and natural behavior.

“The UVB and UVA2 spectrum is excellent – the most sun-like I’ve ever seen in a T5 lamp for terrariums – Thomas Griffiths of Tomaskas Ltd.”


Exo Terra’s T5 UVB bulbs are engineered to provide sufficient and biologically effective UVB output for up to 12 months, offering a reliable and energy-efficient solution for long-term reptile care. Specifically designed to integrate seamlessly with Exo Terra T5 fixtures and compatible with other standard T5 fluorescent light holders, these bulbs offer versatility and practicality for any terrarium setup. Their reliable performance and exceptional quality make them an essential component for creating optimal habitats that meet the diverse needs of reptiles.

The Exo Terra® Reptile UVB300 VHO T5 Bulb helps promote healthy Vitamin D3 synthesis, which in turn facilitates improved calcium absorption – safeguarding against Metabolic Bone Disease. Its UVA and UVB emissions surpass those of traditional T8 bulbs and energy-efficient alternatives, while enhanced UVB penetration extends its suitability for use in taller terrariums or those equipped with denser screens.

For optimal results and prolonged lifespan of the bulb, we recommend using it in conjunction with the Exo Terra® T5 Terrarium Top High-Performance Reptile UVB Fixture.The longer sizes can be placed across multiple terrariums.

 

Long-lasting UVB output (12+ months).

Keepers can use the UV Index reference values to ensure that animals are exposed to an appropriate level of UV when basking. The intensity of the emissions varies depending on the distance from the basking area. Creating a gradient – from highest safe UV index at the basking area to lowest UV index in cooler areas – means they can completely self-regulate alongside their thermoregulatory behaviours. They should not be allowed to expose themselves to more than a safe maximum and should have the freedom to escape all light completely with areas of zero UV and Infrared. This can be achieved by strategically adding plants, hides, and decorative items to create shaded zones.

The UV radiation output of all UV-emitting bulbs gradually decreases over time. To ensure your animals consistently receive sufficient UV exposure, we recommend replacing the Exo Terra® Reptile UVB T5 tube — or any other UV bulb — at least every 12 months.


To support the efficient conversion of vitamin D3 and enhance various metabolic and hormonal processes, it is beneficial to ensure that UV light exposure is complemented by an ample supply of infrared-A (NIR) radiation. The most effective sources can be found in Tungsten Halogen or standard Incandescent spot bulbs, such as the Exo Terra Intense Basking Spot or Halogen Basking Spot. This combination promotes optimal body temperature regulation and overall well-being.

Pet care lamp for use with Reptiles, Amphibians and Invertebrates only.
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 4281266568

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4.9 ★★★★★
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Lesley
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★★★★★ 5
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I’ve only used this for several nights. Overall I’m pretty happy with it, especially for the price. It is soft to the touch and has a nice, smooth feel. It’s lightweight but still provides enough warmth for mild to cool nights. I don’t like feeling weighed down when I sleep, so the light fill is actually a big plus for me. If you’re someone who sleeps hot, this is a solid choice. The corner tabs are super helpful. I paired it with a duvet cover and haven’t had issues with shifting or bunching. It also fits my bed well, though I could see it being a bit short on the sides if you have a very thick mattress. This is a great budget-friendly option and seems like it will be easy to maintain.
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Reviewed in the United States on September 19, 2025
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Chinaza Madu
Grantham, US
★★★★★ 5
A Great Comforter for Everyday Use
Size: Full/Queen, Style: All-Season
I absolutely love this comforter! I love the fact it’s machine washable, and it held up really well after the first wash. It fluffed back up nicely, stayed soft, and didn’t lose its shape. It’s not too heavy but still cozy enough to keep you comfortable. For the price, the quality exceeded my expectations, and I am very happy with this purchase. I highly recommend 😊
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Reviewed in the United States on June 4, 2026
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Laurie A. English
Lexington, US
★★★★★ 5
Excellent down alternative insert
Size: Full/Queen, Style: All-Season
I purchased this down alternative for my Airbnb because we can easily wash it. I love that it is fluffy and warm and easy to put into the duvet. Price was great as well!!
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Reviewed in the United States on April 19, 2026
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Renee
Lowell, US
★★★★★ 5
Feels luxury, I approve
Size: King, Style: Warm
I have purchased high end comforters/duvet inserts and this one is somehow my favorite. It's so thick and fluffy. I was going to do the double duvet insert method to create an extra lush bed situation, but honestly it's not needed at all with this comforter! It poofs up wonderfully inside my duvet cover (king duvet, king insert) and it's like heaven. It's very cozy yet airy, and it moves well during the night and does not fee too heavy despite its weight. This thing is definitely on the warm end and probably won't be suitable for Florida summers, but depending on how you set the AC at night it could be fine! The comforter is weighty, it feels like quality, and has a soft fabric. I wouldn't use it without a duvet cover, that's more of an aesthetic choice but I like keeping it clean. The white is very white. Honestly, I will be getting another one simply because I'm so impressed. Definitely no need to drop $300+ dollars elsewhere.
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Reviewed in the United States on October 25, 2025
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Rosalie
Massapequa, US
★★★★★ 4
ALL SEASON IS TOO WARM!
Size: King, Style: All-Season
I got the King, All Season, to squeeze into a Queen duvet for extra floof and it's sooo cozy. Highly recommend. I redacted 1 star though because although it says All Season, the amount of down in here feels like it's for winter. The first night I used it I woke up dripping in sweat. It's currently March, I live in Los Angeles area, hitting about 75° weather outside rn, but I sleep with AC full blast at night (usually hit about 64 when I wake up). I can't sleep with it, I'll need to buy the "cool" one, and hope that isn't tooo thin. Don't get me wrong, it's a great insert, but holy hell, it's too heckin' warm. I saw someone else mention it and wish I had honed in on their comment. I don't wanna return it as it was used, so I'm stuck with it now. *UPDATE* I am back because I also bought the "Cool" blanket as well after experiencing the heat of the all season and it too is also too hot for me. I've had a duvet before but I guess not filled to the capacity of these blankets. If you're a hot sleeper maybe look elsewhere?
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Reviewed in the United States on March 12, 2026

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