uxcell 2pcs 18inch Airstone Aerator Bubble Diffuser Bar Aquarium Air Pump Accessories

Suitable for freshwater, saltwater aquarium and hydroponic use. Used to increase the dissolved oxygen level in the aquarium. It produces fine bubbles making it efficient in the replacement of oxygen in fish ponds, tanks or hydroponic systems. Direction: Soak in the water for 15 minutes before use. Connect the airstone with your air pump and tube (not included). When it is clogged with dirt or creating bubbles with low quantity, please wash it for re-used.