{"product_id":"cultiv8-tube-heaters-energy-efficient-ambient-climate-control","title":"Cultiv8 Tube Heaters – Energy-Efficient Ambient Climate Control","description":"\u003csection\u003e\n\u003ch3\u003eCultiv8 Tube Heaters – Energy-Efficient Ambient Climate Control\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003e*300W On Backorder - Estimated to arrive in October 2026*\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eMaintaining a stable \"Goldilocks zone\" temperature is critical for preventing growth stunting and root-zone shock, particularly during cold winter nights or lights-off periods. The Cultiv8 Tube Heater is a professional-grade, low-wattage heating solution designed to provide consistent, gentle warmth within your grow space. Unlike bulky fan heaters that can cause localised leaf burn and rapid dehydration, these tube heaters radiate a steady heat that stabilises ambient temperatures and reduces relative humidity. With an IP55 safety rating and versatile mounting options, they are the ideal choice for protecting your crop from cold stress while simultaneously lowering the risk of mould, powdery mildew, and Botrytis.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Maintaining night-time temperatures in grow tents, preventing condensation in drying rooms, warming propagation areas, and protecting greenhouse plants from frost.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Against Cold Stress:\u003c\/strong\u003e Provides a steady thermal buffer that prevents metabolic slowdown and nutrient lockout caused by sudden temperature drops in the root zone or canopy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture \u0026amp; Disease Prevention:\u003c\/strong\u003e By subtly raising the ambient air temperature, these heaters help lower relative humidity and prevent condensation from forming on leaves, significantly reducing the threat of fungal pathogens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Efficiency Performance:\u003c\/strong\u003e Operating at low wattages (from 60W to 300W), these units are far more cost-effective than standard space heaters for maintaining long-term, background warmth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP55 Rated Safety:\u003c\/strong\u003e Specifically built for the high-humidity environment of a grow room, featuring resistance against dust and water splashes, alongside integrated thermal protection to prevent overheating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Includes brackets for easy installation on floors or walls, allowing you to position the heat exactly where it’s needed—under benches, along tent walls, or near intake vents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Automated Control:\u003c\/strong\u003e Fully compatible with the Cultiv8 Heat Mat \u0026amp; Tube Heater Controller for automated temperature management between 20°C and 42°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Sizes \u0026amp; Coverage Guide\u003c\/h3\u003e\n\u003cdiv class=\"specs-table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eRecommended Coverage\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e60W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60W\u003c\/td\u003e\n\u003ctd\u003e30cm\u003c\/td\u003e\n\u003ctd\u003eUp to 2m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e80W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80W\u003c\/td\u003e\n\u003ctd\u003e60cm\u003c\/td\u003e\n\u003ctd\u003e2m³ to 3m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e120W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120W\u003c\/td\u003e\n\u003ctd\u003e60cm\u003c\/td\u003e\n\u003ctd\u003e3m³ to 4m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e180W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180W\u003c\/td\u003e\n\u003ctd\u003e90cm\u003c\/td\u003e\n\u003ctd\u003e4m³ to 5m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e240W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e240W\u003c\/td\u003e\n\u003ctd\u003e120cm\u003c\/td\u003e\n\u003ctd\u003e5m³ to 6m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e300W Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W\u003c\/td\u003e\n\u003ctd\u003e150cm\u003c\/td\u003e\n\u003ctd\u003e6m³ to 7m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Supply:\u003c\/strong\u003e 220-240V, 50Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Temperature:\u003c\/strong\u003e 91°C to 96°C (During operation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e IP55 (Dust and Splash Resistant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Features:\u003c\/strong\u003e Integrated Thermal Cut-off Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Floor or Wall (Mounting brackets included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrategic Placement:\u003c\/strong\u003e Always mount the heater low to the ground. Since heat rises naturally, floor-level mounting ensures warmth circulates through the plant canopy and warms the pots before exiting through your extraction system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Clearances:\u003c\/strong\u003e While designed for grow room safety, the surface temperature reaches approx. 95°C. Ensure the heater is mounted at least 10cm away from tent fabric, plastic liners, or direct contact with foliage to prevent scorching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostatic Control:\u003c\/strong\u003e For maximum energy efficiency, plug your tube heater into a Cultiv8 Thermostat. This allows the heater to only engage when temperatures drop below your set point (e.g., 18°C), saving power during the day when lights provide sufficient heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorizontal Mounting:\u003c\/strong\u003e For optimal convection and even heat distribution, it is highly recommended to mount the tube horizontally.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrow Tents \u0026amp; Cabinets:\u003c\/strong\u003e The perfect \"lights-off\" heat source to maintain stability in small to medium-sized enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Greenhouses:\u003c\/strong\u003e Utilise the 240W or 300W models to provide frost protection for sensitive tropical species during winter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePropagation Areas:\u003c\/strong\u003e Keeping clones and seedlings at a steady 22°C–25°C for rapid root development in unheated garages or sheds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"60 Watt","offer_id":48418993274980,"sku":"4346","price":42.9,"currency_code":"AUD","in_stock":true},{"title":"80 Watt","offer_id":48418993307748,"sku":"4347","price":52.9,"currency_code":"AUD","in_stock":true},{"title":"120 Watt","offer_id":48418993340516,"sku":"4348","price":57.9,"currency_code":"AUD","in_stock":true},{"title":"180 Watt","offer_id":48418993373284,"sku":"4349","price":61.9,"currency_code":"AUD","in_stock":true},{"title":"240 Watt","offer_id":48418993406052,"sku":"4350","price":76.0,"currency_code":"AUD","in_stock":true},{"title":"300 Watt","offer_id":48418993438820,"sku":"4351","price":85.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay15_2026_09_43_43PM.png?v=1778852637","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/cultiv8-tube-heaters-energy-efficient-ambient-climate-control","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}