Air Stone， Round Shaped Air Stone Aquarium Fish Tank Bubble Diffusers Maker[Product Information]- ♥ HEAVY ENOUGH - This diffuser is heavy enough to stay where you place it after connecting it to the air pump by air tube， does not float.
- ♥ ADD OXYGEN - Air stone can create a ton of air bubbles for a larger fish tank， add enough oxygen to your hydroponic growing system， no leaks.
- ♥ WASHABLE - Aquarium air stone can be washed with your old toothbrush， can use for a long time.
- ♥ FITS MOST AIR PUMP - Diameter of the stone size is 1.6 inch， connector size: 0.16 inch external， 0.11 inch internal， fits most aquarium air pumps.
- ♥ SAFE MATERIAL - This air stones for hydroponics is made from mineral stone， safe and non-toxic to your fish.
