Pawfly Aquarium 8-Inch Air Stone Cylinder – 2 Pack Diffuser for Large Tanks, Ponds & DWC

Overview

The Pawfly Aquarium 8-Inch Air Stone Cylinder diffuses air into larger water volumes with steady, gentle bubbles. This 2-pack is designed for durability and reliable operation in ponds, outdoor setups, and expansive tanks. It is a practical diffusion tool for multi-tank arrangements or garden water features and hydroponic systems.

Dense micro bubble diffusion for larger vessels

With a dense micro-hole design, this diffuser releases a wide column of fine bubbles that rise smoothly through the water. The result is an even diffusion pattern that helps promote gentle mixing near the surface and more uniform distribution of aeration without creating excessive turbulence in every corner of the tank.

• Dense micro-hole design for even aeration
• Large 2 diameter by 8 length diffuser covers substantial water volume
• Jetting volume 24 L per minute with a pump greater than 7 W recommended
• Weighted 16 oz with end square supports for stable placement in water

Ideal applications

Best suited for ponds, outdoor water features, large home aquariums, and hydroponic DWC systems where robust diffusion is helpful. Not intended for small tanks that require compact diffusers.

• Large tanks and ponds
• Hydroponic DWC systems and outdoor installations
• Works with standard airline tubing 3/16 or 3/8 inch

Care and use

Setup and maintenance are straightforward: soak the cylinder fully in water for several hours before first use to maximize initial performance. After weeks or months of operation, a gentle brush helps remove buildup and maintain steady airflow.

• Soak for 3 hours or longer before first use
• Rinse and brush periodically to prevent clogging
• Avoid prolonged direct sunlight to preserve material

Product details

Model ASC200 delivers a jetting volume of 24 L per minute. A pump with power greater than 7 W is recommended. It uses standard airline tubing 3/16 and 3/8 inch. Each cylinder weighs about 16 oz and ships as a 2 pack for convenient use across multiple setups. Suitable for larger water volumes; not advised for very small tanks.