Ordering Information – Sold by the Metre.
This product is sold by the metre.
Please enter the total number of metres required in the quantity box.
Example:
If you require 6 metres, simply enter 6 as the quantity.
You will receive one continuous length.
If you require more than 8 metres or need custom tubing lengths, please call us on 0330 043 6676 or WhatsApp (Mobile) 07596 101873, and we’ll be happy to offer a discounted price on your order.
N Koi’s Premium Soft & Flexible Air Line Tubing 4mm x 6mm – Aquarium & Pond Safe, Frost Free will not Crack/Split
High-Quality Airline Tubing for Aquariums, Ponds & Dosing Systems
Our Premium Soft & Flexible Air Line Tubing is designed for reliable, long-term performance in aquariums, Koi ponds, and dosing pump systems. Manufactured from high-grade materials, this tubing remains flexible year-round and delivers consistent airflow without cracking or splitting, unlike similar cheap air lines.
With a 4mm inner diameter and 6mm outer diameter, it fits all standard aquarium and pond air pumps, making it a versatile and essential component for any aeration or dosing setup.
Soft, Flexible & Built to Last
Unlike cheaper airline tubing that becomes brittle in cold conditions, this premium tubing retains its flexibility even during colder months. This ensures a secure fit on pump outlets and air stones, reducing air leaks and improving overall system efficiency.
✔ Soft and easy to route
✔ Will not crack or split in winter
✔ Long-lasting and durable
Safe for Fish & Aquatic Life
This air line tubing is completely non-toxic and safe for use with fish, shrimp, and other aquatic life. It will not leach harmful chemicals into the water, making it suitable for both freshwater and pond environments.
Universal Fit – 4mm ID / 6mm OD
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Inner Diameter: 4mm
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Outer Diameter: 6mm
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Compatibility: Fits all standard aquarium air pumps, pond air pumps, air stones, and dosing pumps
Perfect for use with air pumps, air stones, manifolds, check valves, and dosing systems.
Key Features & Benefits
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Premium soft & flexible air line tubing
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Suitable for aquariums, ponds & dosing pumps
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Fits all standard air pumps (4mm ID / 6mm OD)
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Non-toxic & safe for fish
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Cold-resistant – won’t crack or split
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Ideal for freshwater aquariums & Koi ponds
Ideal Uses
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Aquarium air pump connections
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Pond aeration systems
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Koi pond air lines
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Dosing pump tubing
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Air stones, diffusers & manifolds
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This tubing is great for use with our Pond Pumps and Air Stones
- Please note that the packing may vary from the picture shown.
