{"product_id":"arcadia-t5-90cm-39w-uvb-tube","title":"Arcadia T5 90cm 39w UVB Tube","description":"\u003cp\u003e\u003cstrong\u003eThe 90 cm version of Arcadia's T5 HO tube, for enclosures too long for the 60 cm size to cover properly.\u003c\/strong\u003e The Arcadia T5 90 cm 39 W UVB Tube is a high-output (HO) T5 fluorescent lamp built to an 850 mm (34\") length, sold in the same three UV-B strengths as the rest of the range - Forest 6%, Desert 12% and Dragon 14% - so a long vivarium, aviary-style enclosure or walk-in reptile room gets even coverage along its length rather than a single hot spot from a shorter tube pushed to compensate.\u003c\/p\u003e\n\u003cp\u003eStrength selection works the same way it does across Arcadia's T5 HO range: Forest for shade and part-sun species, Desert for open-basking desert and savannah reptiles, and Dragon for the strongest indoor baskers in tall enclosures. The UV Index a given strength delivers at a given distance does not change with tube length - length changes the coverage area, not the intensity at any one point - so the gradient table below is the same data Arcadia publishes for the 60 cm tube in this range.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e850 mm (34\") length\u003c\/strong\u003e - built for longer enclosures where a 60 cm tube would leave the far end under-lit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree UV-B strengths\u003c\/strong\u003e - Forest 6%, Desert 12% and Dragon 14%, so the fixture and controller carry over if your UV-B requirement changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT5 HO (high output)\u003c\/strong\u003e - needs a matched T5 HO controller; it will not run on a standard T8 or non-HO T5 ballast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7000K colour temperature\u003c\/strong\u003e (7500K on Dragon) with 30% UV-A, for a daylight-balanced basking area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 month rated lifespan\u003c\/strong\u003e before UV-B output has declined enough to need replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUV Index by distance\u003c\/h3\u003e\n\u003cp\u003eArcadia's own open-air readings, Solarmeter 6.5, lamp only - nothing between the meter and the tube. Mesh, glass or acrylic between the lamp and the animal will reduce what actually reaches the basking spot below these numbers.\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDistance from lamp\u003c\/th\u003e\n\u003cth\u003eForest 6% - UVI\u003c\/th\u003e\n\u003cth\u003eDesert 12% - UVI\u003c\/th\u003e\n\u003cth\u003eDragon 14% - UVI\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e300 mm \/ 12\"\u003c\/td\u003e\n\u003ctd\u003e4.50\u003c\/td\u003e\n\u003ctd\u003eNot advised this close\u003c\/td\u003e\n\u003ctd\u003eNot advised this close\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e380 mm \/ 15\"\u003c\/td\u003e\n\u003ctd\u003e3.60\u003c\/td\u003e\n\u003ctd\u003e6.50\u003c\/td\u003e\n\u003ctd\u003e7.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e450 mm \/ 18\"\u003c\/td\u003e\n\u003ctd\u003e2.90\u003c\/td\u003e\n\u003ctd\u003e4.40\u003c\/td\u003e\n\u003ctd\u003e5.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mm \/ 20\"\u003c\/td\u003e\n\u003ctd\u003e2.50\u003c\/td\u003e\n\u003ctd\u003e3.80\u003c\/td\u003e\n\u003ctd\u003e4.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600 mm \/ 24\"\u003c\/td\u003e\n\u003ctd\u003e1.20\u003c\/td\u003e\n\u003ctd\u003e2.40\u003c\/td\u003e\n\u003ctd\u003e3.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eUV zone and which species it suits\u003c\/h3\u003e\n\u003cp\u003eAgainst our UV zone bands (Cryptophotic 0-2, Mesophotic 3-5, Euphotic 6-7, Heliophotic 8-10):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForest 6%\u003c\/strong\u003e runs Cryptophotic to Mesophotic (UVI 1.2-4.5). Arcadia lists chameleons, day geckos, iguanas, water dragons, map turtles, dwarf crocodiles, rainbow whiptails and blue-tongued skinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesert 12%\u003c\/strong\u003e runs Cryptophotic to Euphotic (UVI 2.4-6.5). Arcadia lists bearded dragons, uromastyx, tortoises, freshwater turtles and agamids in large enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDragon 14%\u003c\/strong\u003e runs Mesophotic to Euphotic (UVI 3.2-7.0). Arcadia's own guidance is 350-400 mm as the basking distance for species needing a UVI around 6.0, such as adult bearded dragons.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it fit my enclosure?\u003c\/h3\u003e\n\u003cp\u003eAt 850 mm the tube suits enclosures roughly a metre or more in length, where a single 60 cm tube would light the middle third and leave both ends dim. Height clearance requirements are the same as the shorter tube - around 40-50 cm between mounting point and basking perch, more for Desert or Dragon if you want the option of a lower index further from the lamp. In a long, low enclosure, two shorter tubes at each end can sometimes work better than one long tube in the centre - worth thinking through before you buy for an unusually shaped setup.\u003c\/p\u003e\n\n\u003ch3\u003eWhich strength do I need?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStrength\u003c\/th\u003e\n\u003cth\u003eUV-B\u003c\/th\u003e\n\u003cth\u003eTypical basking UVI\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForest 6%\u003c\/td\u003e\n\u003ctd\u003e6%\u003c\/td\u003e\n\u003ctd\u003e1.2-4.5\u003c\/td\u003e\n\u003ctd\u003eChameleons, day geckos, water dragons, forest and part-sun species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesert 12%\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003ctd\u003e2.4-6.5\u003c\/td\u003e\n\u003ctd\u003eBearded dragons, uromastyx, tortoises, open-basking desert and savannah species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDragon 14%\u003c\/td\u003e\n\u003ctd\u003e14%\u003c\/td\u003e\n\u003ctd\u003e3.2-7.0\u003c\/td\u003e\n\u003ctd\u003eThe strongest indoor baskers, tall enclosures, animals not reaching target UVI on a 12% lamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting\u003c\/th\u003e\n\u003ctd\u003eT5 HO (high output) - requires a T5 HO controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e850 mm (34\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003ctd\u003e39 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUV-B output\u003c\/th\u003e\n\u003ctd\u003eForest 6% \/ Desert 12% \/ Dragon 14%, sold as separate variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUV-A output\u003c\/th\u003e\n\u003ctd\u003e30%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColour temperature\u003c\/th\u003e\n\u003ctd\u003e7000K (Forest, Desert); 7500K (Dragon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColour rendering index\u003c\/th\u003e\n\u003ctd\u003e95 CRI (Desert, Dragon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated lifespan\u003c\/th\u003e\n\u003ctd\u003e12 months before replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eAA3075 (Forest 6%) - AA2516 (Desert 12%) - AA2597 (Dragon 14%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cp\u003eTube only. A T5 HO controller\/ballast and a reflector are required and sold separately. Fit a guard wherever the animal can reach the fitting.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e longer vivariums and enclosures needing even UV-B coverage across their length, matched to species by strength as above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e short enclosures where an 850 mm tube would extend past the usable basking area; running on a non-HO T5 ballast; nocturnal species with no UV-B requirement.\u003c\/p\u003e\n\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eDo not look directly at an operating UV-B lamp. Position the fitting so the animal cannot make direct contact with the tube - this is a thermal and UV burn risk, particularly for climbing species. Fit a guard where climbing access is possible. UV-B does not pass through ordinary glass or most acrylic, so mount with a clear path to the basking area.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eReplace on a 12 month cycle regardless of whether the tube still lights - UV-B output falls well ahead of visible light failing. Keep the tube and reflector free of dust.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arcadia-t5-60cm-24w-uvb-tube\"\u003eArcadia T5 60cm 24W UVB Tube\u003c\/a\u003e - the shorter size, for standard-length enclosures, same three strengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arcadia-t8-90cm-30w-uvb-tube\"\u003eArcadia T8 90cm 30W UVB Tube\u003c\/a\u003e - a lower-cost T8 alternative at the same 90 cm length, in Forest 6% and Desert 12%.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eArcadia does not publish a fixed warranty term on UV-B tubes - they are a consumable with an expected 12 month working life, not a defects item. Your rights under the Australian Consumer Law apply regardless. This is a glass fluorescent tube at 850 mm; standard freight applies, packed to avoid breakage in transit.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eIs the UV Index at a given distance different on the 90 cm tube compared with the 60 cm tube?\u003c\/h4\u003e\n\u003cp\u003eNo. UV Index at distance is a property of the strength and the T5 HO family, not the tube length. Length changes how much of your enclosure gets even coverage, not the intensity directly under the tube.\u003c\/p\u003e\n\u003ch4\u003eCan I run this on a T5 HO controller built for the 60 cm tube?\u003c\/h4\u003e\n\u003cp\u003eNo - the controller needs to match the tube length and wattage. An 850 mm 39 W tube needs a controller rated for that length; check your fixture's rated tube length before ordering.\u003c\/p\u003e\n\u003ch4\u003eWould two shorter tubes work better than one 90 cm tube?\u003c\/h4\u003e\n\u003cp\u003eIn a long, low enclosure, sometimes yes - two tubes let you create a stronger zone at each end with a dimmer middle, where one long tube gives more even but flatter coverage. It depends on your layout and is worth planning before buying.\u003c\/p\u003e\n\u003ch4\u003eDo I need a reflector with this tube?\u003c\/h4\u003e\n\u003cp\u003eYes, for meaningful output. Without a reflector, UV-B is emitted in all directions and much of it never reaches the animal - Arcadia's distance figures assume a reflector-fitted setup on the T8 lamps and a bare fixture is markedly less effective.\u003c\/p\u003e\n\u003ch4\u003eHow often does it need replacing?\u003c\/h4\u003e\n\u003cp\u003eEvery 12 months, on a calendar reminder rather than by eye - the tube keeps lighting well after its UV-B output has dropped below a useful level.\u003c\/p\u003e\n","brand":"Arcadia","offers":[{"title":"Forest 6%","offer_id":55242253631779,"sku":"AA3075","price":80.95,"currency_code":"AUD","in_stock":true},{"title":"Desert 12%","offer_id":55335322943779,"sku":"AA2516","price":80.95,"currency_code":"AUD","in_stock":true},{"title":"Dragon 14%","offer_id":55335322976547,"sku":"AA2597","price":80.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/arcadia-t5-90cm-39w-uvb-tube-10268560621859-1-dq.webp?v=1790372665","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/arcadia-t5-90cm-39w-uvb-tube","provider":"Nicks AOT","version":"1.0","type":"link"}