Designed for the Aqua One Marine Wooden Airstones Nanoskim 40

•  Limewood Airstones
• 2 per Pack
• Replace often for best results
• Genuine Aqua One Spare Parts
• The Limewood airstone creates a high density of small bubbles which creates a high surface area of interaction between air and water

These Aqua One Marine Nanoskim 40 Airstones should be replaced often to ensure the protein skimmer works  effectively.