Zoo Med ReptiSun T5 HO 10.0 UVB/UVA Bulb (High Output)

: In stock

: Lighting

$0.00 $22.99


HO = High Output! Stronger UVB and Brighter Light: Twice as strong as ReptiSun T8 10.0 (Standard Output) Lamp 

Increased UVB Output = perfect for larger reptile habitats (see lamp distance notes on package).

Zoo Med's linear fluorescent UVB lamps are made of the finest UVB transmitting quartz glass from Germany, with beneficial UVB emissions lasting a full twelve months! The UVB emissions from these lamps can help to prevent or reverse metabolic bone disease in captive reptiles, birds, and other animals.

In addition to UVB, Zoo Med's ReptiSun lamps also emit beneficial UVA wavelengths which stimulate feeding, reproduction, and natural behavior patterns in reptiles, amphibians, and birds. This Reptisun T5 HO 10.0 UVB bulb emits UVA (30%), UVB (10%) and full spectrum visible light, and are used and recommended by zoos, veterinarians and top reptile professionals worldwide. Use only in lighting fixtures rated for T5 HO (High Output) lamps.

Measuring just 5/8" in diameter, this lamp doesn't take up valuable space, but is still twice as strong as standard 5.0 UVB bulbs. Ideal for large habitats, these lamps emit beneficial UVB light up to 36" from the surface of the bulb.

This lamp provides UVB, UVA & Visible light for your reptile:

UVB: Reptiles need UVB for vitamin D production and calcium metabolism. Without UVB, reptiles can develop Metabolic Bone Disease in 6 months or less. This lamp, along with proper temperatures, will enable your reptiles to make vitamin D and process calcium from their diet.

UVA: Reptiles and amphibians can see things that humans can't. UVA is part of the rainbow of colors that reptiles can see. UVA helps to increase activity levels, appetite, and reproductive behaviors. Without UVA, they are color blind!

Lamp Distance: Refer to the back of your lamp's box for optimal UVB emit distance (15W - up to 30"). Glass and plastic filter out UVB; there should be no glass or plastic between the lamp and your reptile. Fine mesh blocks up to 50% of light and UVB. This should be taken into consideration when determining lamp distance. The T5 ReptiSun HO is designed for most reptiles housed in terrariums that are 18" to 30" tall. Always have lamp at least 6" away from your animal. The optimal distance from T5 HO lamps to the animal is 18-36", depending on the lamp. 

When To Replace Your Lamp: This lamp will provide your animals with beneficial UVB for a period of up to 12 months when used 10 to 12 hours per day. Record date of first use of lamp and replace after 12 months.

Note: This T5 bulb has the same % output UVB/UVA as the T8 bulb, but it has a more intense beam and therefore the distance needed from the bulb to tank area differs. Consult packaging for recommendations.

To help you determine what kind of lighting your specific critter needs, check out this lighting guide as well as this lighting chart.

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We carry two types of products: reptile and amphibian supplies as well as lifestyle products, including books, home goods, apparel, art, and commissioned work.  Given our lifestyle products represent independent stores, the price of shipping may differ or not qualify for the flat rate. This will be noted on the product page. 


Ask a Question
  • Is there a "36 bulb that is more then 39w? Our daughter tank is about 30" tall and the temp is holding at around 80 and should be 90 degrees correct for bearded dragon?

    I believe the 39w is the highest we have for 36". 

    For a bearded dragon, we recommend a gradient of 80 degrees to 100-110 degrees. Check out our care sheet for more info: https://reptileslounge.com/blogs/care-sheets/care-sheet-for-bearded-dragons

Customer Reviews

Based on 55 reviews
Geri Wynn

It has enough power to give my bear die the required light

Long Lasting

I have been using these bulbs for my reptiles for about 5 years now and the only thing about them I don't like is the price (which is any UVB bulb, really). They are long lasting, so I start using my meter to test the UVB levels at around 10 months. So far, I haven't had any drop to an unusable level before a year was up.

We have ordered this item many times.

No issues. Bulb always comes in quickly and havent had one yet that came in broken.


Tube UVB is the way to go for your reptiles. Never go coil. These tubes (generally) last about 9 months before needing replacement. I have a UVA/UVB meter to check every month or so, to determine UV output for my bearded dragon. I've not had one yet that burned out suddenly -- All have lasted until the UV output was degraded and needed replacement. Solid recommendation as essential for reptile keepers.

Beardie loves it.

We use for baby bearded dragon. He enjoys basking. Judging by his behavior, this product provides the right amount of light. We turn on at aprox 10 am and turn off around 10 pm. Working without a hitch for 2 months.