Serenity Oxygen Block 20g

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The Serenity slow release oxygen block releases oxygen and also keeps your pH stable.

Oxygen Block
  • The active oxygen block will dissolve slowly in water and release ingredients that will help maintain a healthy environment for your fish.
  • As the block dissolves it will replenish the oxygen supply.
  • Replace the block with a new one when it has almost dissolved.
  • This product will also help stabilise pH.
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