Zoo Med ReptiSun 5.0 UVB Fluorescent Reptile Lamp, 24-in

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ReptiSun 5.0 is an award winning, industry standard, UVB lamp for reptiles. A full 5% UVB output allows vitamin D3 synthesis to occur naturally, preventing or reversing MBD and other health problems in turtles and tortoises, Bearded Dragons, Iguanas, and all other diurnal reptiles. The ReptiSun 5.0 is effective for UVB induced photo conversion of vitamin D3 in reptiles skin at distances up to 12".

Key Benefits
  • 5% UVB helps to prevent or reverse metabolic bone disease in reptiles
  • 30% UVA helps to increase activity levels, appetite, and reproductive behavior
  • Strengthens and improves shell growth in all captive turtles and tortoises
  • Eliminates the risk of Vitamin D3 overdose
  • Beneficial to the psychological well being of reptiles and amphibians

HAZARDS TO HUMANS AND ANIMALS: Lamp contains mercury. Manage in accord with disposal laws.

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  • Item Number
  • Brand

    Zoo Med

  • Reptile Type

    Aquatic Turtle, Frog & Newt, Lizard, Snake, Tortoise


The ReptiSun® 5.0 is effective for UVB induced photo conversion of vitamin D3 in reptile’s skin at distances up to 12?.


Can I use the rheostat/thermostat with a Reptisun, Avian Sun or Power Sun UV?

These lamps need specific line voltages; they cannot be used with dimmers/rheostats.

Does this lamp emit UVB?

Yes! This lamp provides the full visible spectrum as well as UVA and UVB. What is UVB and why does my reptile need it?

Does this lamp provide heat?

No. This lamp emits UVA and UVB without heat!

How often should this lamp be replaced?

This lamp will provide optimum levels of UVB for 12 months so it should be replaced once a year.

How far away should this lamp be from my animal?

This lamp should be placed 12 inches from your animals basking site.

How long should I leave this lamp on each day?

This lamp should be on for 10 – 12 hours a day to maintain your animals day and night cycle.


A Walk on the Wild Side

Zoo Med makes it their mission to provide reptiles and other exotic pets with the very best food, supplements and habitats. This company of passionate hobbyists knows that not all pets are furry with four paws and offers a true understanding of reptiles, amphibians, fish and invertebrates. Whether you're new to reptile care and fishkeeping or are an experienced breeder, Zoo Med covers it all.

A Walk on the Wild Side

An Exotic Diet for an Exotic Pet

When it comes to your pet's dinner, the menu consists of worms, crickets and snails galore. Zoo Med offers a wide range of nutritious and tasty food to feed every exotic pet a special diet that's made just for them.

Turtles and Tortoises

Turtles and Tortoises: From treats to whole diets, Zoo Med provides a nutritional boost to fit any turtle or tortoise want or need.


Lizards: For pets like bearded dragons, there's a selection of tasty options, including cans of mealies, grasshoppers and caterpillars and complete pellet diets.


Fish: Your tropical fish enjoys a treat every now and then, and Zoo Med offers a tasty variety to choose from.


Frogs: Including high-protein, sinking pellets that mimic what frogs would eat in the wild, this frog food is just what you need to keep your amphibian jumping.

Give Him an Extra Boost

Give Him an Extra Boost

Because any pet could benefit from a little extra care, Zoo Med makes supplements that will help fortify your exotic pet's health and environment. Feeding him a supplement, in addition to his healthful meal, can be the extra step that it takes to keep your frog, lizard, turtle or fish happy and healthy.

Rest, Relax and Thrive

Every exotic pet needs a place to call their own, and Zoo Med makes it easy to keep them comfortable and thriving.



Mimic the true feel of a tropical or desert climate with lighting that gives reptiles the warmth of a natural habitat. The selection includes long-lasting bulbs that require minimal maintenance and infrared lights that won't disturb sleep patterns.



With bedding made from renewable sources like coconut husks that allow animals to burrow and nest as they would in the wild, consider Zoo Med your source to create a home within your home.

About Zoo Med

About Zoo Med

Since 1977, Zoo Med has been manufacturing products for reptiles, amphibians, birds and aquatic pets. Led by experience and dedication, they provide truly innovative products, with an emphasis on efficiency and minimizing environmental impact. At Zoo Med, they are never satisfied with the status quo, which is why they constantly strive to bring the latest and greatest options right into the homes of the pet lovers that need them.

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Customer Reviews
6 Reviews 6 Reviews 4.2 out of 5 Stars

83% Recommend

83% of reviewersrecommend this product

4.2 / 5

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  • Russian Tortoise Caretaker

    By on

    This ZOOMED REPTISUN 5.0 UVB F18T8/REPT no longer ignites after five months of service. Looking to replace it, it's not even available for purchase anywhere. Now I have to change the fixture to accommodate a compact fluorescent bulb? Very disappointing.

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  • Turtle light

    By on

    Light bulb went out after 2 days but I contacted chewy and they sending me another one hopefully this one will last

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  • Perfect and affordable!

    By on

    I have never recieved a broken one from Chewy, always packed well and works like it is supposed to!

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  • leopard gecko

    By on

    This works just know if you have a leopard gecko keep the light on for 30 min in the morning and 30 min at night and later after a month 2 hours in the morning and at night

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  • Buy this bulb!

    By on

    This is a great bulb. I replace these every 8 months ( the Vet recommended not waiting 12 months to replace and replace at 8 - 9 months). So, the low price I paid helped me out. I use this bulb with a 60 watt basking bulb ( spotlight ) at one end of my tortoise enclosure. My tortoise loves to warm himself under it!

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  • Bought the 5.0 uvb fluorescent for our beardie, great light it has made a difference

    By on

    If you've never ordered pet products online and you're still hesitant, I recommend Chewy.com. I've have had a few crazy concerns ( one of own doing) the other out of my control, and Their customer service is "OUTSTANDING ", I have no plans of looking else where... Thank you Sawyerbrown03

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