It is for freshwater, saltwater aquarium and hydroponic use. It is 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.
Material : Mineral Stone, Plastic;Outlet Diameter : 3mm/ 0.128"
Stone Part Size : 12 x 17mm / 0.47" x 0.67" (D * L);Total Length : 31mm/ 1.2"