Description
The Evolution Aqua 4mm Sinking Airline (sold per metre) is a premium weighted air tubing designed for smaller aeration systems where a tidy and professional installation is required.
Unlike standard airline tubing that floats, this sinking airline stays securely on the pond or tank floor, ensuring reliable airflow delivery to air stones, diffusers and aeration equipment.
Its smaller 4mm size makes it ideal for aquariums, quarantine systems, small ponds and low-flow aeration applications. The flexible construction allows easy routing while maintaining excellent durability and resistance to kinking.
Supplied per metre, it can be ordered in the exact length required for your installation.
Key Features
- Sold per metre for custom lengths
- 4mm weighted sinking airline
- Remains submerged during use
- Prevents floating airline issues
- Flexible and kink-resistant
- Ideal for smaller aeration systems
- Suitable for ponds and aquariums
- Compatible with air stones and diffusers
- Durable outdoor-grade construction
- Easy installation
Technical Specifications
| Feature | Specification |
|---|---|
| Product Type | Sinking Airline Tubing |
| Size | 4mm |
| Sale Type | Per metre |
| Brand | Evolution Aqua |
| Material | Weighted flexible PVC |
| Application | Pond & aquarium aeration |
| Compatibility | Air pumps, air stones and diffusers |
Performance Overview
| Aspect | Rating |
|---|---|
| Stability Underwater | Very High |
| Durability | High |
| Flexibility | High |
| Airflow Efficiency | High |
| Maintenance | None |
Applications
- Aquariums
- Quarantine tanks
- Small koi ponds
- Garden ponds
- Air stone installations
- Aeration systems
- Biological filtration support
Installation
- Cut to required length
- Connect to air pump outlet
- Attach to diffuser or air stone
- Lay airline along the bottom
- Ensure unrestricted airflow
Maintenance
- No routine maintenance required
- Inspect periodically for wear
- Check airline remains free from blockages
- Replace if damaged or excessively worn
Range Positioning
| Product Type | Purpose |
|---|---|
| 4mm Sinking Airline | Small-system air delivery |
| 8mm Sinking Airline | Larger pond aeration systems |
| Standard Airline | General air distribution |
| Air Stones | Oxygen diffusion |
Key Benefits
- Custom length ordering per metre
- Stays submerged for tidy installations
- Prevents floating tubing problems
- Ideal for smaller aeration systems
- Flexible and durable construction
- Easy to install and route
- Improves system appearance
- Reliable long-term performance
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