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Tornado Algae Block


  • Suitable for ponds with fish or aquatic plants
  • Treats 800L per block or can be broken on to 4 parts which treat 200L each
  • Blocks dissolve over 1-2 weeks depending on conditions and circulation
  • Do not use in ponds without a pond pump running
  • Repeat if algae re-appears
  • Do not overdose or use another block until previous block has fully dissolved