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AlgaeFree Pool Blocks All Season Algaecide (Pack of 2, 600g)

List price: $36.99  
Savings: $10.00 (27%)
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2 Pack of AlgaeFree Pool Blocks (600 g) - Good for 2 Months of Treatment

Pool Blocks all season algaecide is an extra strength, slow release solid tablet algicide suitable for all chlorine and salt water pools. Eliminating all forms of green, mustard and Blackspot algae to deliver outstanding results in harsh environments. Sold since 1978 they have become one of Australia's most sold Premium Algicide Products.

Pool Blocks are used by commercial pools, hotels and local governments to control algae. They contain more than twice the active ingredient of most standard competitor products to ensure the longest possible treatment period.

Using Pool Blocks regularly prevents Blackspot Algae and stops your pool from turning green when chlorine levels fall.


  • Blackspot, Mustard & Green Algae Killer
  • Eliminate Algae from Walls, Grouting & Steps
  • Reduce Chlorine Consumption
  • Handy Monthly Slow Release Tablet
  • Ideal for Salt or Chlorine Pools
  • Long Life Algicide for Summer and Winter
  • Makes Pool Water Sparkling Clear

Directions for use: 

AlgaeFree Pool Blocks All Season Algaecide (Pack of 2, 600g)

1. Intial dose - place one (1) POOL BLOCK per 25,000 liters of pool water in the wire basket when the pump is running

2. If algae persists, a monthly maintenance dose of one block per 50,000 L or ½ block per 25,000

3. Adjust pool water pH and maintain between 7.2-7.6 during treatment. Brush walls weekly when treating blackspot algae. Use in conjunction with chlorine or an approved bactericide when swimming.


DO NOT contaminate irrigation or drink water supplies or aquatic habitats by cleaning of equipment or disposal of waste.

Disposal: Do not reuse empty container. Dispose of empty container in household garbage. For information on dispoal or unused, unwanted products, contact manufactuer or the provincial regulatory agency

Pool Algae Treatment (1PoolAlgaeTreatment(2).pdf, 1,458 Kb) [Download]

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