Zoo Med ReptiSun T8 5.0 UVB Lamp, 15 Watts
$39.55
Price: $39.55
(as of Oct 14, 2025 19:53:36 UTC – Details)
The 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. Accept no substitutes; get the original reptile UVB lamp – Zoo Meds ReptiSun® 5.0.”
Is Discontinued By Manufacturer : No
Product Dimensions : 18.2 x 1.2 x 1.1 inches; 0.74 ounces
Manufacturer recommended age : 1 month and up
Item model number : FS18
Department : Unisex-Adult
Date First Available : June 15, 2004
Manufacturer : Zoo Med Laboratories
ASIN : B000255OS6
Best Sellers Rank: #100,360 in Pet Supplies (See Top 100 in Pet Supplies) #270 in Reptile & Amphibian Habitat Lighting
Customer Reviews: 4.4 4.4 out of 5 stars 328 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); } }); });
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 inches.
High quality bulb made in Germany
Customers say
Customers find this UVB lamp to be the best 5.0 option, working well for bearded dragons and providing excellent value. The light level receives positive feedback, with one customer noting it helps prevent metabolic bone disease. The lifespan of the bulb receives mixed reviews, with some customers reporting it lasts longer while others mention it dying within a month and a half.
Lara –
As described, works fine
I sometimes get a bit confused about the distance these bulbs need to be placed from the animal (I went with what the manufacturer website suggests for this bulb– which for my tortoise was 12 inches.)– But this bulb is recommended again and again by other rep. keepers, and that is why I purchased it. It was quite a bit cheaper from Amazon than either of my local chain pet stores. I can’t really attest to how effective it is, as I’ve only been using it 3 weeks or so, but so far, I’m really happy. (I put it in my old ten gallon fish tank hood light and built a rack to hold the light over my tort’s table, and I think it looks good, the lighting below is good– So hopefully he’s getting all that UVB he needs!)If anything affects this opinion, I’ll be sure to edit this.
medicine Woman –
OUR IGUANAS THANK YOU
OUR IGUANAS THANK YOU FOR THEIR SUNLIGHT AND WHAT A GOOD PRICE THAT YOU ONLY HAVE TO PAY FOR ONCE EVERY 6 MONTHS TO A YEAR.THIS LIGHT HELPS THEM ASSIMULATE CALCIUM IN THEIR BONES THROUGH THAT VITAMIN D3 THAT THEY GET FROM THAT SPECIAL LIGHTENING THAT THEY NEED THAT SIMULATES NATURAL SUNLIGHT EVEN THOUGH IT MAY BE ARTIFICAL IT STILL HELPS KEEP THEIR BONES STRONG WITH THE SUPPLEMENTS THAT WE GIVE THEM OF CALCUIM D3 POWDER ALONG WITH THE REPTILE VITAMIN POWDER AND THE ZOOMED IGUANA NATURAL FOOD.NOTE: A GOOD THING FOR MANY TO KNOW IS YOU CAN FEED THE WHITES OF EGGS TO YOUR GREEN IGUANAS AND AFTER YOU GIVE THEN ONLY THE WHITES OF HARD BOILED EGGS THEN COLLECT THE SHELLS PUT THEM IN THE REFRIDGERATOR FOR A DAY THEN GET A MAGIC BULLET OR COFFEE GRINDER AND GRIND UP THE SHELLS USE OVER THEIR FOOD.FRESH COLLARDS AND KALE EITHER FROM YOUR ORGANIC GARDEN OR STORE THAT IS IN WALMART IN GREEN AND ORANGE PLASTIC BAGS ADD SOME CARROTS OVER THEM AND HAND SPRINKLE A SPRAY OF FILTERED WATER JUST ENOUGH TO MOISTEN THEM AND GIVE THEM SOME WATER IN A WATER DISH NEXT TO THEIR FOOD PET AND LOVE THEM AND THEY WILL BE HAPPY DOSCILE CRITTERS.WE ARE WAITING FOR SPRING TO DO WHAT WE HAVE BEEN CONTEMPLATING TO DO THAT IS GOING TO BE THEIR BIGGER CAGE OF A BEAUTIFUL IGUANA HABITAT NEVER SEEN BEFORE.
AlphaTrek –
Solves metabolic bone disease problems
This light is the real deal; don’t let anyone talk you into buying a full-spectrum light that is not specifically for reptiles! I bought one on a recommendation that WAS a full-spectrum, but was actually for plants. I was assured that it would provide enough for my tegu. He developed MBD, metabolic bone disease, which affects reptiles who do not get the recommended 12 hrs a day UVA/UVB. Symptoms are decreased appetite or complete refusal of food, reduced activity & “depression”, and dragging limbs, (for reptiles that have them, obviously; not snakes:)! There is a long list of other symptoms, but these were the ones my tegu lizard was exhibiting. I caught it in the early stages, and bought the ReptiSun 5.0 for my small tegu. It has been around 20 days, and he is eating & active again. His strength is not quite back to normal, but we are on our way to full recovery:)!
Squantum –
Works great, as far as I know
Works great, as far as I know. These always last longer than I need them to considering you are supposed to replace them every 6 months. They keep my little guys from getting MBD. Great price here on Amazon, too.
Dubson –
be sure to turn the bulb to latch it into place
They’re perfect. I had a slight user error in the beginning but figured it out.
Danni Baird –
Love this for my iguana
Love this for my iguana, and other tropical herps. (if you have a beardie or desert herp make sure you get a 10.0 not a 5.0 like this for proper UVB for them!)
Stephanie J Samuels –
Great UVB fluorescent lights at good price.
Turtles require UVB spectrum light to for proper growth and health. These bulbs are an excellent value at a fair price. Should be replaced after one year if used daily for 12 hours per day.
Kate –
Exactly what my hermit crab needed
I ordered this light as a replacement for my hermit crab tank. I had one previously, used it on every night and it lasted approximately 6 to 8 years. This is my first replacement! I ordered the same exact one I had because it had lasted so long and worked well in his crabitat.
JAMES CRUSE –
Good item
Customer –
Replacement bulb for our Gecko. Easy to fit
Amazon Customer –
A++ perfect
Reba B –
Worked for 1 day and then blew out