{"product_id":"white-poly-tubing-4mm-precision-micro-irrigation-heat-reflective-feed-line-250m-bulk-roll","title":"White Poly Tubing - 4mm Precision Micro-Irrigation – Heat-Reflective Feed Line (250m Bulk Roll)","description":"\u003csection\u003e\n  \u003ch3\u003eWhite Poly Tubing - 4mm Precision Micro-Irrigation – Heat-Reflective Feed Line (250m Bulk Roll)\u003c\/h3\u003e\n  \u003cp\u003eMaintaining a cool and stable nutrient solution is critical for root health and oxygen absorption, especially in high-intensity grow environments. Our White 4mm Poly Tubing offers unique thermal benefits that make it a superior choice for both indoor and outdoor hydroponic gardening. The bright white exterior is engineered to reflect light and radiant heat, preventing the \"solar oven\" effect commonly seen with darker tubing. By keeping the solution inside significantly cooler, you reduce the risk of root pathogens and ensure your plants receive nutrients at an optimal temperature. This 250-metre commercial-grade bulk roll is the perfect solution for large-scale micro-drip systems where precision and environmental control are paramount.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e High-heat indoor grow rooms, outdoor greenhouse fertigation, heat-sensitive hydroponic setups, and large-scale micro-drip installations.\u003c\/p\u003e\n  \n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThermal Reflective Technology:\u003c\/strong\u003e The bright white outer layer reflects significant amounts of light and heat, helping to maintain lower nutrient temperatures and higher dissolved oxygen levels.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommercial 250m Bulk Value:\u003c\/strong\u003e Designed for large-scale operations, providing extensive reach for hundreds of individual plant sites with maximum cost-efficiency and minimal waste.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUV-Stabilised Longevity:\u003c\/strong\u003e Contains high-quality UV stabilisers specifically formulated to prevent the tubing from becoming brittle or cracking under the intense radiation of LED, HPS, or direct sunlight.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision 4mm Micro-Flow:\u003c\/strong\u003e The ideal diameter for \"spaghetti\" feeder lines, providing targeted nutrient delivery from your main distribution manifolds directly to dripper stakes and emitters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight-Blocking Core:\u003c\/strong\u003e Despite the white exterior, the tubing is engineered to remain opaque, preventing light penetration and halting the growth of algae within your micro-lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuperior Flexibility:\u003c\/strong\u003e Highly pliable and easy to work with, allowing for tidy routing around plant pots and grow tent infrastructure without kinking or restricting flow.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Bright White (Heat-Reflective)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 4mm (Internal Diameter)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 250 Metre Bulk Roll\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e UV-Stabilised Low-Density Polyethylene (LDPE)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Precision Micro-Drip, Fertigation, and Hydroponics\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHeat Management:\u003c\/strong\u003e For best results in outdoor or greenhouse environments, use white tubing for all exposed runs to significantly reduce the heat load on your irrigation system.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSoft-Fit Connection:\u003c\/strong\u003e Dip the ends of the 4mm tubing in warm water for a few seconds before pushing onto barbed fittings; this ensures a perfect, leak-proof seal as the plastic cools and contracts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClean Cuts:\u003c\/strong\u003e Always use a sharp blade or dedicated tube cutter to achieve a square end. This ensures the tubing seats fully against the internal stop of your micro-fittings.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Intensity Grow Rooms:\u003c\/strong\u003e Managing nutrient temperature in tents where LED or HID lights generate significant radiant heat.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutdoor Drip Systems:\u003c\/strong\u003e Protecting your feed lines from the degrading effects of the sun while keeping the water cool.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Misting:\u003c\/strong\u003e Ideal for propagation systems where maintaining cool water temperatures is essential for successful cloning and seedling development.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48410722992228,"sku":"8440","price":154.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay13_2026_11_22_55PM.png?v=1778685938","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/white-poly-tubing-4mm-precision-micro-irrigation-heat-reflective-feed-line-250m-bulk-roll","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}