Aeration Stone Trapezoid 15 cm HAPPET (aquarium air stone)

HAPPET Aeration Stone Trapezoid 15 cm is a porous aquarium air stone designed to generate fine bubbles and improve oxygenation in freshwater and marine tanks. The trapezoid shape provides an elongated diffusion surface for more even bubble distribution, supporting water circulation and gas exchange. This air stone connects to a standard airline and is intended for continuous or periodic aeration to assist biological filtration and aerobic microorganisms in the tank environment.

Advantages

The trapezoid design increases the effective surface area for air diffusion, producing a steady stream of fine bubbles that enhance oxygen transfer and reduce dead zones in the aquarium. Made from a durable porous material, the stone maintains performance with regular maintenance and is compatible with typical aquarium airline tubing. Its 15 cm length makes it suitable for medium to large tanks, providing balanced aeration without occupying much space.

Suitable for

• Freshwater aquariums requiring improved oxygenation and water movement
• Marine tanks where stable gas exchange supports animal and plant life
• Systems with biological filtration that depend on aerobic bacteria
• Planted tanks that benefit from enhanced CO2 distribution and circulation
• Air-driven decorations or under-substrate aeration setups

Key specifications

• Shape: trapezoid
• Length: 15 cm
• Material: porous diffusion stone (compatible with aquarium water)
• Connection: standard airline compatible
• Bubble type: fine bubble diffusion for enhanced oxygen transfer
• Suitable for: freshwater and marine environments

How to use

Attach the aeration stone to an airline connected to an air pump or air-driven device, ensuring an airtight connection. Place the stone at the desired position on the tank bottom or hidden beneath substrate, keeping it clear of large debris. Operate the air pump according to tank size and required flow; check bubble output and adjust air pressure or use a valve to regulate aeration. Periodically inspect the stone for clogging and clean by soaking in dechlorinated water and gently rinsing or replacing when diffusion performance declines.

Usage recommendations

Use with an appropriately sized air pump and adjustable valve to control bubble rate; avoid excessive pressure that can cause large bubbles and reduce oxygen transfer efficiency. Regular maintenance—occasional gentle cleaning or replacement—will ensure consistent fine bubble production and help maintain aquarium water quality.