Grey cylindrical Aeration stone with rectangular ends 150mm

Detailed features: Material: mineral / plastic composition - typical for CAPASTEC air stones Dimensions: 150 mm (≈ 5.9″). Shape: cylindrical with square ends — design allowing for easy connection and installation Color: grey / black. Suitable for: aquariums, ponds, aeration systems - both fresh and saltwater. Requirement before first use: immersion/soaking in water for a certain period (e.g. 1 hour) for proper operation. Maintenance: if clogged — wash or soak to restore porosity. Connection: standard hose/tube compatible with a diameter of about 4 mm (for this type of product).   Recommendations for use: Before use, soak the diffuser for at least 30–60 minutes to allow it to fill and start working evenly. Connect the diffuser to a compressor/pump via 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 seen with air diffusers) Place the diffuser in the lowest part of the tank/pond for better bubble distribution. Regularly clean the stone when algae or sediment accumulates, using a soft brush or a slightly acidic solution, then rinse thoroughly. Avoid high pressure and working with a weak compressor - this can lead to disruption of the porous structure of the diffuser.   Benefits This 150mm grey cylindrical diffuser provides efficient and even air delivery through multiple fine bubbles, improving oxygen enrichment in tanks and ponds. It is easy to install, maintain and compatible with various systems, thanks to its versatile design and durable material.