4mm Sinking Airline 100M

Evolution Aqua 4mm sinking airline is a heavy-duty, PVC-based weighted tubing designed to drop straight to the pond or aquarium floor without needing extra weights. It resists kinking, cracking, and UV degradation.

Key Specifications:

• Internal Bore: Standard 4mm (fits standard air pump outlets and small air stones).

• Material: Heavy-duty, UV-resistant PVC compound.

• Colour: Discreet black for blending into pond or tank bases.