Black Mineral Bubble Air Stone Diffuser for Aquarium Fish Tank Pond Pump
Suitable for aquarium, fish tank, pond hydroponic and circulation system. 1 x Air Stone Diffuser. 4Pcs Bottle Cap for DIY Live Plants Brine Shrimp Hatchery Kit Co2 Diffuser ✪. - Soak it in water for at least 15 minutes before use.