Biotec Algae Block 21g


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Algae Blocks by Biotec are a slow-release algae killer. Controls hairy algae and green water over 5 to 10 days by disrupting algae photosynthesis. Clears tanks & ponds. Stabilizes tank & pond water.

Directions for use. Place the block in the tank or pond or crush the block to smaller granules & sprinkle them onto hairy algae directly.

Algae Blocks Information;

  • Clears tanks & ponds
  • 1grm treats 57 litres
  • 4 blocks treats 4788 litres
  • APVMA Australia approved