Economy Air Stones - 4"x2"

Long Lasting round air stones provide dense air bubbles to aerate your pond. Pond aeration is one of the most important methods of keeping your pond balanced and healthy. In nature the pond ecosystems naturally inject oxygen into the water. In a backyard pond it is essential to add air into the system. 

• 4" long x 2" wide
• Easy to clean
• 3/16" Barbed inlets set into body
• Self weighted
• Long lasting