Jainsons Pet Products 2 Inch Multicolor Air Stone Bubble Diffuser Aquarium Air Stones (4 PCS) Aquarium Air Stone(4 Stones)
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Direction For Use :- 1) connect the air stone with air tube. 2) soak in the water for 15 minutes before use. 3) Its durable and be used for a long time.When it is clogged with dirt or producing bubbles with low quantity ,please wash it for re-used.
