Grey Cylindrical Air Stone with Rectangular Ends 150 mm

Cylindrical air diffuser (air stone) in grey, designed for underwater placement to create fine air bubbles and optimal aeration.

Detailed specifications:

• Material: mineral / plastic composition — typical for CAPASTEC air stones
• Dimensions: 150 mm (≈ 5,9″).
• Shape: cylindrical with square ends — a design allowing easy connection and installation
• Colour: grey / dark (grey / black).
• Suitable for: aquariums, ponds, aeration systems — for both fresh and salt water.
• Requirement before first use: immerse / soak in water for a specified period (for example, 1 hour) for proper operation.
• Maintenance: if clogged — wash or soak to restore porosity.
• Connection: standard hose / tubing compatible with a diameter of around 4 mm (for this type of product).

Recommendations for use:

• Before use, soak the diffuser for at least 30–60 minutes so that it becomes saturated and starts working evenly.
• Connect the diffuser to a compressor / pump using a suitable hose and check that the pressure is appropriate — if it is too high, the bubbles may become large and rise quickly without effect (a problem observed with air diffusers).
• Place the diffuser in the lowest part of the reservoir/pond for better bubble distribution.
• Clean the stone regularly when algae or sediment build up, using a soft brush or a mildly acidic solution, then rinse thoroughly.
• Avoid high pressure and operation with a weak compressor — this may damage the diffuser's porous structure.

Benefits

This grey cylindrical 150 mm diffuser provides efficient, uniform airflow through numerous fine bubbles, improving oxygen enrichment in reservoirs and ponds. It is easy to install and maintain, and is compatible with various systems thanks to its universal design and durable material.