The 20 gram Aqua One O2 Plus Blocks slowly dissolve to replenish the oxygen and stabilise the pH in your aquarium water, maintaining a healthy environment for your fish. Each block treats 40-60 Litres for approximately 3 days. Replenish the Oxygen block when it has almost dissolved.

About This Oxygen Block

• 20g
• Slowly dissolves
• Treats 40-60L
• Lasts approximately 3 days
• Helps replenish and stabilise the pH levels

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