Zoo Med ReptiSun High Output 12″ 5.0 UVB Lamp
$20.99
Price: $20.99
(as of Oct 23, 2025 16:57:30 UTC – Details)
From the brand


Zoo Med Laboratories has been on the cutting edge of reptile husbandry and innovation for nearly 50 years. In 1993 Zoo Med developed the 1st UVB lamp for reptiles, which changed the way all Zoos, herpetologist, and hobbyists keep reptiles in captivity. Zoo Med currently has over 30 patents and manufactures over 50% of its 1200 item product line at the company headquarters in San Luis Obispo, California.
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Is Discontinued By Manufacturer : No
Product Dimensions : 13.15 x 2.13 x 1.02 inches; 2.47 ounces
Manufacturer recommended age : 1 month and up
Item model number : FS5-15
Department : Unisex-Adult
Date First Available : August 3, 2014
Manufacturer : Zoo Med
ASIN : B00MDWFQMK
Best Sellers Rank: #29,951 in Pet Supplies (See Top 100 in Pet Supplies) #68 in Reptile & Amphibian Habitat Lighting
Customer Reviews: 4.6 4.6 out of 5 stars 423 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Stronger UVB and Brighter Light: Twice as strong as standard ReptiSun 5.0 Lamps!
Helps to prevent or reverse Metabolic Bone Disease commonly seen in captive reptiles.
Used and recommended by Zoos, Veterinarians, and top reptile professionals.
High quality Made in Germany.
Customers say
Customers find the UVB lamp bright and well-fitting, with one mentioning it’s perfect for their bearded dragon’s terrarium. The product receives positive feedback for its quality. However, the functionality receives mixed reviews, with some saying it works great while others report their bulbs never worked. Moreover, the lifespan is concerning, with multiple customers reporting that the bulbs don’t last more than one month.

kelsey –
Good quality
Works perfect for my chameleon and didnât have to go to the store
El Gallo –
Bright UBV light
I got this for my Ribbon snakes’ terrarium and so far, the light works great. The light is bright and provides the essential UBV.
Lucy –
Works great!
I bought this 12â Zoo Med T5 UVB bulb to go into my 12â Arcadia fixture and it fits perfectly! It has been so hard to find this size T5 bulb available so I am very glad it was available through Amazon. My Ocellated Skink is very pleased with this bulb. There were a few shipping delays but it arrived very well packaged in multiple layers of bubble wrap in a box just fine.
Christopher l Maiorano-Duncan –
quality products
I use these on all my gecko enclosures for Uvb tokays,and giant day gecko enclosures last long time if used on timers like I use. change then once a yr
Cat and Otter –
Great bulb, but I wish they lasted longer…
These bulbs are absolutely necessary for your reptiles, but the UVB light output drops off fairly quickly. We replace the bulb every six months for this reason. Although the bulb still lights up and provides illumination, the UVB that your lizard needs is not good after about 6 months.
LaShonda –
GREAT BUY
Ordered this for my chameleon off a suggestion from a youtube video and am happy that I did. Previously had a dome UVB light and this one fits perfectly across the top of my chameleon’s cage. It’s definitely made her a lot happier being able to receive more lighting than the dome light! Definitely worth purchasing as well as it comes with one light in the hood that I purchased so the additional one is just backup for when the other goes out! SO SCORE all the way around!
JC –
One of the best UVB bulbs out there.
A constant product over the years minus a short period they put out too much UVB (that was fixed and about a decade ago).
Kathryn Donahue –
Product fine; packaging “iffy”
I previously wrote that when the product arrived it did not work. Because it was a light bulb and was packaged in only an envelope, I was sure it had been damaged in transit. HOWEVER, the bulb DOES WORK. I did try it three times, but apparently it was “operator error”…my husband was finally able to get it adjusted properly and it does work. I apologize for my previous review, but I did, in fact, try several times to get it to work. I would recommend, perhaps, some better packaging, just to ensure no in-transit damage is done. Thank you.
Season –
This is one of two Reptisun bulbs I purchased this week. This one and a T5 bulb. Both had no UVB output at all. This bulb was also quite dim. After this experience I won’t buy Reptisun products again. I spoke with Amazon customer service and they’re sending a report of false advertising. I also had to call because this item wasn’t eligible for return. However I did get a refund as it was defective.
UmmAdam –
Item arrived with broken box and not well sealed.
E. J. –
Buena calidad, cumple con lo prometido en la descripción aunque la primera compra llegó roto debido a que no se está embalando de la manera correcta para su manejo en paqueterÃa. Pero si hubo devoción de mi dinero.
casanovazerg –
Lo malo de comprar focos en amazon