Aquarium Silicone Airline Tubing – 4/6mm Non-Kink 12ft Oxygen Tube in 11 Colours

The Castle Dawn Aquatics Multi-Coloured Silicone Airline Tubing is a flexible and durable solution for all your aquarium air needs. Made from 100% soft silicone, it stays pliable and resists hardening or cracking over time, ensuring long-lasting performance in both freshwater and marine setups. With 11 vibrant colour options, this airline tubing allows you to easily colour-code your equipment, perfect for keeping your tank organised during maintenance.

Whether you're running sponge filters, dosing systems, air stones, CO₂ systems, or other devices, this 4mm inner diameter tubing is compatible with most standard air pumps and accessories. Its non-kink design ensures smooth airflow and hassle-free installation, even in tight spaces.

Key Features and Important Notes:

• What’s Included:
  1 × 12ft (4 m) length of coloured 100% silicone airline tubing (random or selected colour depending on variant)
• Size:
  12ft (4 metres) | 6 mm outer diameter × 4 mm inner diameter – fits all standard aquarium air outlets
• Colour Variety:
  Available in 11 distinct colours for colour-coding different equipment and systems in your aquarium
• Non-Kink Flexibility:
  Designed to bend easily without folding or restricting airflow, making setup easier and more reliable
• Durable Silicone Material:
  Made from premium 100% silicone – soft, long-lasting, non-toxic and safe for all aquatic life
• Compatibility:
  Fits standard air pumps, CO₂ systems, sponge filters, bubble walls, and other air-driven devices
• Use Case:
  Suitable for tropical aquariums, planted tanks, shrimp tanks, marine setups, and hydroponic systems
• Installation Tip:
  To attach easily, soak the end in warm water for 30 seconds before sliding onto fittings
• Warranty:
  1‑Year Warranty (T&Cs apply).