Heavy-Duty Black Poly Tubing – 4mm Precision Micro-Irrigation (250m Bulk Roll)
Please note the above shipping is an estimation only. Actual shipping cost can be calculated on the checkout page.
Important shipping notice: This product is not stocked at our Thomastown, VIC warehouse and is dispatched from another local warehouse. Please allow approximately 1-2 weeks for it to reach us before it is ready for pickup or dispatch.
Heavy-Duty Black Poly Tubing – 4mm Precision Micro-Irrigation (250m Bulk Roll)
For large-scale facilities and precision-focused growers, consistent nutrient delivery is non-negotiable. Our Heavy-Duty Black 4mm Poly Tubing is the professional standard for "spaghetti" feeder lines, offering a high-performance solution for individual plant irrigation. This massive 250-metre bulk roll is designed to connect main distribution manifolds directly to micro-drippers, stakes, and emitters. The opaque black construction is engineered to be 100% light-proof, preventing the algae growth that is the primary cause of blockages in small-diameter lines. By ensuring your micro-lines remain clean and clear, you guarantee that every plant receives the exact volume of nutrients required for a uniform, high-yielding harvest.
Best For: Large-scale micro-drip installations, connecting individual dripper stakes, precision fertigation in commercial facilities, and high-pot-count hydroponic systems.
Key Features
- Commercial Bulk Value: The 250-metre roll is the most cost-effective choice for large-scale operations, providing enough length for hundreds of plant sites with minimal joins and zero wasted material.
- Total Light Blockage: Deep black pigmentation ensures zero light penetration, halting algae blooms in their tracks and protecting your emitters from the bio-film build-up that leads to crop-damaging blockages.
- Ultra-Flexible Pliability: Specifically formulated for micro-irrigation, this tubing navigates complex plant layouts and tight corners without kinking, ensuring an unobstructed flow of vital nutrient solution.
- UV-Stabilised Longevity: Manufactured from premium-grade polyethylene built to endure the extreme radiation and heat of professional LED and HPS lighting environments without cracking or becoming brittle.
- Universal 4mm Compatibility: Precision-engineered to fit all standard 4mm barbed micro-fittings, "take-off" joiners, and pressure-compensating (PC) drippers for a secure, leak-free seal.
- Inert & Nutrient Safe: Constructed from high-quality LDPE that will not react with concentrated mineral salts or pH adjusters, maintaining the chemical integrity of your feed.
Specifications
- Diameter: 4mm (Internal Diameter)
- Material: Low-Density Polyethylene (LDPE)
- Colour: Opaque Black (Light-Proof)
- Length: 250 Metre Commercial Bulk Roll
- Application: Precision Micro-Drip and Fertigation Systems
Installation & Maintenance Tips
- Soft-Seal Technique: For a faster and more secure installation onto barbed fittings, dip the end of the 4mm tubing in warm water for a few seconds to increase flexibility before pushing it into place.
- Uniform Delivery: To ensure every plant receives the same amount of water, try to keep your 4mm feeder lines as close to the same length as possible across your entire manifold.
- Clean Cuts: Use a dedicated tube cutter or a sharp blade to achieve a perfectly square cut. This ensures the tubing seats fully against the fitting barb, preventing leaks under high pump pressure.
Ideal For (Uses)
- Commercial Fertigation: The primary feeder line for rockwool, coco-coir, and perlite-based commercial grow rooms.
- Drip Stake Connections: Connecting 13mm, 19mm, or 25mm main supply lines to individual plant sites.
- Precision Misting: Suitable for low-flow propagation systems and specialized aeroponic cloning setups.
Oversized Item Delivery Options
Since oversized items require special handling, we may need to provide a custom freight quote for your order and will contact you with an updated shipping rate.
Available options include:
✔ Delivery to your closest depot for pickup - default method
✔ Direct delivery - requires forklift on site
✔ Direct delivery with tailgate lift truck (extra fees apply)
✔ Forklift loading at our warehouse (no extra charge if you arrange your own freight)
✔ Direct truck delivery (available in Victoria)
Important Notes:
- Shipping costs vary by location and method
- Because of the forklift requirement, delivery to the nearest depot is the default option and will be the method used unless you contact us to request otherwise.
Business Delivery:
- Business delivery is available for commercial customers only
- If you select business delivery and your products are bulky, it is your responsibility to ensure you have appropriate equipment (including forklifts) to unload products from the delivery truck
- If you select business delivery and you are not a business, you risk your product not being delivered and may incur additional fees to retrieve your order
- Business delivery customers must provide a valid business address and contact information
- Additional fees may apply for failed delivery attempts due to lack of appropriate unloading equipment
Let us know your preference, and we'll arrange the best solution for you!
Important Note on Availability & Shipping
Our warehouse serves as our office and logistics centre rather than a retail showroom. Because we ship from multiple locations and manage high-turnover stock, not all items are available for immediate pickup.
Lead Times:
- In-Stock Items: Usually ready for dispatch the same day.
- Supplier-Dependent Items: Usually take 2–8 weeks to arrive, depending on supplier availability. Products from Adloheat may take 8–12 weeks to manufacture—they are made to order in Australia by a small business, and longer lead times reflect the care put into quality.
While we strive for fast delivery, some timelines are subject to supplier availability and are beyond our control. We appreciate your patience as we source the best quality gear for your project.
Biosecurity & Interstate Shipping Restrictions
Due to strict state biosecurity regulations, we are unable to ship some products to certain states and territories:
- Potting Mixes cannot be shipped to Western Australia (WA), the Northern Territory (NT), or Tasmania (TAS).
- Seeds cannot be shipped to Western Australia (WA).
Orders placed for these items to restricted states will be cancelled and refunded. It is the customer's responsibility to ensure that the items being ordered can lawfully be delivered to their state or territory.
We Offer the Best Prices
We are committed to offering our customers the best prices possible. If you find the exact same product advertised at a lower price elsewhere, we invite you to contact us and we will review your price match request.
Price Match Conditions:
- The competitor must be an Australian-based seller with a physical presence in Australia
- The product must be the exact same item with a matching SKU or model number
- The product must be in stock and available for purchase at the competitor
- The lower price must be publicly advertised and currently available (not a clearance, closeout, or discontinued item)
- Price matching excludes marketplace platforms including but not limited to Temu and Aliexpress
- Price matching requests must be made before purchase
How to Request a Price Match:
To request a price match, please contact us at sales@greenhousepolytunnels.com.au with a link to the competitor's product listing, or call us on 0418 438 774. Please include the product details and the advertised lower price. We will review your request and respond within 2 business days.
Shop
- Choosing a selection results in a full page refresh.