It is an important instrument to successfully keep aquatic fish for respiration process.
Creates bubbles in fish tank while attached to an air pump(air pump is not included).
Suitable for inner diameter 4mm soft tube.
Item Size: Approx. 40mm * 17mm/1.57*0.63" (D * H)
Material: Mineral Stone + Plastic
Function: increasing oxygen
Suitable occasion: fish tank, aquarium
6pcs x Air Stone
Before use, please immerse it in the water for 15 minutes.
If it doesn't have bubbles in one part, please change the pump of higher power.
Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. Thanks for your understanding and happy purchase!