Set of 4 Airstones AS 003

Connect the air diffuser to the air tube and oxygen pump.
Then put it into the aquarium.

Great for freshwater, saltwater/reef aquariums and hydroponic use.
Increase oxygen levels, “blow off” CO2 and raise PH

1 x yellow airstone
1 x green airstone
1 x blue airstone
1 x red airstone