Increase oxygen levels.
The air stone is important for fish oxygen.
Soak the stone in water for fifteen minutes before use.
Clean regularly with a brush as they get clogged after months of usage.
Suitable for inner diameter 4mm soft tube.
Diameter 4cm and 1.5″
Diameter 8cm and 3.1″
Diameter 10cm and 3.9″
The real product colors may be slightly different from what you see in the images.
The product dimensions may be slightly different from what is written in the product specifications.