4mm Black PVC Airline Hose for Koi Pond & Aquarium Aeration (ID 4mm x OD 6mm)

Black 4mm PVC Airline Tubing: Essential for Koi Pond & Aquarium Aeration

The Discreet, Non-Toxic Solution for Perfect Aeration

Ensure your pond life is thriving with our high-quality 4mm Black PVC Airline Tubing. This flexible and durable hose is the essential link between your air pump and air stones, diffusers, or aeration devices, providing your Koi and aquatic plants with the vital oxygen they need.

The 4mm Internal Diameter (ID) is the standard size for nearly all small pond and aquarium air pumps, air stones, manifolds, and accessories, ensuring a perfect fit for your aeration system.

Don’t let unsightly clear hose spoil the beautiful look of your pond or aquarium. Our premium 4mm Black PVC Airline Tubing is specifically designed for the aquatic hobbyist, offering a high-quality, discreet, and reliable connection for all your aeration needs.

Key Features & Aquatic Benefits

• Optimal Oxygen Delivery: Provides an unrestricted pathway for air, ensuring maximum oxygen transfer to your water, which is critical for healthy Koi fish and a balanced biological filter.
• High-Quality PVC Construction: Manufactured from tough, flexible PVC, the tubing is designed for consistent airflow and is built to last in outdoor pond environments.
• Blends Seamlessly: The rich black color is ideal for pond systems, where it blends perfectly against black pond liners and underneath black aquarium gravel/silicone, making your aeration setup virtually invisible.
• Fish-Safe & Non-Toxic: Constructed from high-quality, food-grade PVC, this airline is smooth-bore, non-toxic, and completely safe for all cold water, tropical, marine, and Koi pond environments. Protect your valuable fish and aquatic life.
• Standard 4mm Fit: Features a universal 4mm Internal Diameter (I.D.) and 6mm External Diameter (O.D.). This is the industry-standard size, ensuring perfect compatibility with nearly all small air pumps, air stones, air diffusers, and manifold/gang valves.

   

  Product Specifications

   

  Feature	Detail
  Material	High-Quality Flexible PVC
  Color	Black (Discreet finish)
  Internal Diameter (ID)	4mm (Standard Aquatic Size)
  External Diameter (OD)	Approx. 6mm
  Safety	Non-Toxic, Fish Safe, UV-Resistant
  Ideal Use	Koi Pond Aeration, Aquarium Air Pumps