{"product_id":"replacement-t5-lamps","title":"Replacement T5 Lamps","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003eReplacement T5 Lamps — Efficient Fluorescent Bulbs for Propagation and Early Growth\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers running propagation setups, seedling trays, or early-stage growth who want reliable light output without overspending\u003c\/p\u003e\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eT5 replacement lamps are the workhorse of indoor propagation. Low heat, efficient light output, and a fraction of the cost of premium fixtures. If you're growing clones, seedlings, or young plants, these do the job properly without the markup.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eReplacement T5 lamps are \u003cstrong\u003ehigh-efficiency fluorescent bulbs\u003c\/strong\u003e designed as direct replacements for existing T5 fixtures. At around \u003cstrong\u003e100 lumens per watt\u003c\/strong\u003e, they're significantly more efficient than older T8 and T12 alternatives, delivering strong, even light coverage across seedling trays and propagation benches. The broad light spectrum closely mimics natural daylight, and because T5s emit virtually no heat, you can position them just 6-8 inches from your plant material without risk of burn or stress.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eT5 fluorescent replacement lamps sit in the \u003cstrong\u003ebudget-friendly, proven-performance bracket\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLower upfront cost than LED T5 retrofits or full spectrum grow fixtures\u003c\/li\u003e\n\u003cli\u003eSignificantly more efficient than T8 or T12 alternatives (100 lm\/W vs 70-80 lm\/W)\u003c\/li\u003e\n\u003cli\u003eLonger lifespan than older fluorescent tech (25,000–35,000 hours typical)\u003c\/li\u003e\n\u003cli\u003eWork with existing ballasts — no rewiring needed if you're upgrading bulbs in a current setup\u003c\/li\u003e\n\u003cli\u003eHigher energy consumption than LED T5 replacements, but lower upfront investment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn simple terms: proven, affordable, and they fit what you've already got.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eT5 replacement lamps work best in specific growing scenarios:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePropagation and cloning\u003c\/strong\u003e\u003cbr\u003eKeep lamps 6-8 inches above material. Low heat means no stress to delicate growth. Run 16-18 hours per day during this phase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSeedlings and young plants\u003c\/strong\u003e\u003cbr\u003ePosition at 8-12 inches depending on light intensity preference. Adjust height as plants grow taller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVegetables, herbs, and microgreens\u003c\/strong\u003e\u003cbr\u003eT5s are ideal for lettuce, basil, microgreens, and other lightweight crops. Lower light intensity means lower energy bills while still supporting strong early growth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight spectrum selection\u003c\/strong\u003e\u003cbr\u003eCool white (5000–6500K) bulbs support vegetative growth and leafy development. Warm white (2700–3000K) suits later flowering stages if needed.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBulb type: \u003cstrong\u003eT5 High Output (HO) fluorescent tube\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStandard wattage: \u003cstrong\u003e54W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLight output: \u003cstrong\u003eApproximately 5,000 lumens per bulb\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiency: \u003cstrong\u003e~100 lumens per watt\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable spectrum: \u003cstrong\u003eCool white (5000–6500K) or warm white (2700–3000K)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLifespan: \u003cstrong\u003e25,000–35,000 operating hours\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeat output: \u003cstrong\u003eMinimal — safe to position 6–8 inches from canopy\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatibility: \u003cstrong\u003eStandard T5 HO ballasts (electronic, instant start or programmed start)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstallation: \u003cstrong\u003eDirect plug-in replacement — no rewiring required\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBudget growers setting up their first propagation bench\u003c\/li\u003e\n\u003cli\u003eExperienced growers replacing bulbs in existing T5 fixtures\u003c\/li\u003e\n\u003cli\u003eAnyone growing seedlings, clones, or young plants on a sensible budget\u003c\/li\u003e\n\u003cli\u003eOperators with multiple trays where energy costs add up and efficiency matters\u003c\/li\u003e\n\u003cli\u003eGrowers who want proven technology without the premium fixture price tag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to spaces where \u003cstrong\u003ereliable early-stage growth matters more than maximum output\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eReplacement T5 lamps are a solid, cost-effective foundation for propagation and seedling work. They deliver consistent light output, run cool, and slot straight into existing setups without faffing about with rewiring. If you're replacing worn-out bulbs or building your first propagation rack, these do exactly what they should, day in, day out.\u003c\/p\u003e\n\u003cp\u003eGood time to buy while stock lasts. Proper performance at sensible money.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"LIGHTWAVE","offers":[{"title":"T5 830 24w - 2700k (Red) for 2ft T5 Units","offer_id":47916136628394,"sku":"122040","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"T5 865 54w - 6500k (Blue) for 4ft T5 Units","offer_id":47916136661162,"sku":"122070","price":13.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/122040.jpg?v=1769188236","url":"https:\/\/growershouse.co.uk\/products\/replacement-t5-lamps","provider":"Growers House ","version":"1.0","type":"link"}