Gray cylindrical airstone with rectangular ends, 150 mm

Cylindrical air diffuser (air stone) in gray, designed for underwater use to create fine air bubbles and provide optimal aeration.

Detailed specifications:

• Material: mineral/plastic composite — typical of CAPASTEC air stones
• Dimensions: 150 mm (≈ 5.9″).
• Shape: cylindrical with square ends — a design that allows easy connection and installation
• Color: gray/dark (gray/black).
• Suitable for: aquariums, ponds, and aeration systems — for both fresh and salt water.
• Before first use: soak in water for a set period (e.g., 1 hour) for proper operation.
• Maintenance: if clogged, wash or soak to restore porosity.
• Connection: standard hose/tubing compatible with a diameter of about 4 mm (for this type of product).

Usage recommendations:

• Before use, soak the diffuser for at least 30–60 minutes so it fills with water 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 at the lowest point of the tank/pond for better bubble distribution.
• Regularly clean the stone if algae or sediment accumulates, using a soft brush or a mild acidic solution, then rinse thoroughly.
• Avoid high pressure and using an underpowered compressor — this may damage the diffuser’s porous structure.

Benefits

This 150 mm gray cylindrical diffuser delivers air efficiently and evenly through numerous fine bubbles, improving oxygenation in tanks and ponds. It is easy to install and maintain, and compatible with various systems thanks to its versatile design and durable material.

Using an air pump

The aeration element operates with an external air source. Match its size and resistance to the air pump, and check for clogs if the bubbles decrease.

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