{"product_id":"fluval-t5-led-quad-light-unit-high-output-36-90cm","title":"Fluval T5 LED Quad Light Unit High Output 36\" 90cm","description":"\u003cp\u003e\u003cstrong\u003eFour 39 W T5 HO tubes plus two integrated LED moonlights, in a 90 cm fixture built for larger planted and reef tanks.\u003c\/strong\u003e Despite the \"LED\" in its name, this is a T5 HO fluorescent fixture — the moonlights are a secondary feature, not the fixture's main light source. Total tube output is 156 W across four T5 HO tubes, switched independently of the moonlight function.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 39 W T5 HO tubes\u003c\/strong\u003e — 156 W total output across the fixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 integrated LED moonlights\u003c\/strong\u003e — a low, blue-toned night setting separate from the main tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-position switch\u003c\/strong\u003e — tubes on, moonlight only, or fully off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolished reflectors\u003c\/strong\u003e — direct tube output down into the tank rather than losing it upward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass-rim clamp mounting\u003c\/strong\u003e — fits tank glass 3–15 mm thick.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFixture\u003c\/th\u003e\n\u003ctd\u003eFluval T5HO Quad, model A3965\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal length\u003c\/th\u003e\n\u003ctd\u003e90 cm \/ 36\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTubes\u003c\/th\u003e\n\u003ctd\u003e4 x 39 W T5 HO (156 W total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMoonlight\u003c\/th\u003e\n\u003ctd\u003e2 integrated LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSwitch\u003c\/th\u003e\n\u003ctd\u003e3-position: tubes \/ moonlight \/ off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eGlass-rim clamps, 3–15 mm glass thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e240 V \/ 50 Hz, Australian plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years manufacturer warranty, in addition to Australian Consumer Law rights\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003ePerformance\u003c\/h3\u003e\u003cp\u003eFluval has not published a PAR-at-depth chart for this fixture, so we won't guess one. T5 HO output also falls as tubes age — expect a meaningful drop in usable light well before a tube actually fails, which is why the replacement interval matters for plant and coral growth, not just for keeping the tank lit.\u003c\/p\u003e\u003ch3\u003eCompatibility, spares and supersession\u003c\/h3\u003e\u003cp\u003eThis fixture takes four 39 W T5 HO tubes at approximately 85 cm each. That is a different tube to our 55 cm\/24 W T5 Life Spectrum tube, which fits Fluval's smaller 24\" T5 fixtures — it will not fit this 90 cm Quad unit. Check your fixture's current tube length before ordering a replacement, or contact us to confirm current stock of the correct 39 W\/85 cm tube.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for larger freshwater planted and marine\/reef tanks around 90 cm in length needing high-output T5 lighting, with a night-viewing moonlight option. Not a true LED fixture despite the name — if you specifically want LED-only lighting with app control, see Fluval's Plant 4.0 or Marine 4.0 LED ranges instead.\u003c\/p\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eMains-powered — use on a circuit protected by an RCD (30 mA or less). The power cord is not user-replaceable and there are no user-serviceable parts inside; if the cord is damaged, replace the unit rather than repairing it.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Fluval's 2-year manufacturer warranty against defects, on top of your consumer guarantees under Australian Consumer Law. This is a large item — check freight\/delivery timing at checkout.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eIs this a true LED light?\u003c\/h4\u003e\u003cp\u003eNo. The main light source is four T5 HO fluorescent tubes; the LEDs are a separate low-level moonlight feature only.\u003c\/p\u003e\u003ch4\u003eWill my existing Fluval T5 tubes fit this fixture?\u003c\/h4\u003e\u003cp\u003eOnly if they're 39 W\/85 cm tubes. Our 24 W\/55 cm T5 Life Spectrum tube fits Fluval's smaller 24\" fixtures, not this 90 cm Quad unit.\u003c\/p\u003e\u003ch4\u003eDoes Fluval publish PAR data for this fixture?\u003c\/h4\u003e\u003cp\u003eNo — Fluval hasn't published a PAR-at-depth chart for this model. If precise PAR matters for your setup (e.g. SPS coral), measure it directly with a PAR meter once installed.\u003c\/p\u003e\u003ch4\u003eWhat does the moonlight setting do?\u003c\/h4\u003e\u003cp\u003eIt switches off the main T5 tubes and runs only the two integrated LED moonlights, for a dim night-viewing effect.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293314007331,"sku":"T524","price":316.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-t5-led-quad-light-uni-43875518087459.webp?v=1790237146","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-t5-led-quad-light-unit-high-output-36-90cm","provider":"Nicks AOT","version":"1.0","type":"link"}