The larger the quantity you buy the higher the savings per unit!

Use with oxygen tank or aeration pump

An aquarium pump with in-line filter works well as an oxygen source

3/8" outer diameter barb

IT IS IMPORTANT TO HANDLE THE OXYGEN STONE ONLY BY IT'S STEM. OILS FROM YOUR SKIN CAN PLUG THE PORES. If this happens you should boil the stone for 1 - 3 minutes to remove the oils and sanitize the stone.