Pool Blocks 1.5 kg

All Seasons Algaecide for Fibreglass Pools


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POOL BLOCKS All Seasons Algicide are a unique highly effective long term treatment of five 300g slow-release tablets per 1.5 Kg container. In an average 50,000 litre pool, add two (2) blocks to the skimmer basket followed by just one (1) per calendar month to provide long term protection against all forms of algae.

This unique 'once a month' application provides a constant low level of protection and is an excellent 'first step' in your pool care with substantial savings on your chemical costs and minimal pump and filter running times. In larger pools of 75,000 litres, simply add three (3) blocks initially followed by one (1) block every three weeks thereafter, or in smaller pools the individual tablets may be halved.    

Algaefree Pool Blocks Benefits:

  • Use to kill Blackspot and stubborn algae such as mustard and green algae
  • Eliminates algae from walls, grouting and steps
  • Reduces chlorine consumption
  • Slow-release tablet
  • Suitable for both salt and chlorine pools
  • Long-life algaecide for Summer and Winter
  • Restores clarity to your pool

Ionic Copper Salt Pool Algaecide

The active ingredient in POOL BLOCKS is a natural trace element, an ionic copper salt which is chemically complexed to ensure the longest effective treatment period and to prevent reactions with pool chemicals. POOL BLOCKS also contains a blend of food-grade ingredients which make the formulation highly effective at very low concentrations.
If you follow the directions, the algicide is present at less than both the Australian Standard for Private Swimming Pool Water Quality and also the drinking water guidelines.

Algaecide for all types of pools

POOL BLOCKS control all types of green, mustard and blackspot algae in fibreglass, vinyl-lined, tiled, painted and pebblecrete swimming pools. Once all algae is eliminated, less chlorine is required to maintain recommended sanitiser levels as it is free to perform it's the principal task of killing bacteria.
This provides substantial chlorine savings in both summer and winter while still providing sparkling clear water. 
POOL BLOCKS store for years and only become active when dissolved in the pool water, keeping pools clean with less vacuuming, filtration and salt chlorinator running time which saves electricity and makes your pool maintenance a breeze.
The key to POOL BLOCKS is the constant low level of algae protection all year round acting as a 'first line of defence' against algae problems that occur quickly in untreated pools. Chlorine is a short term treatment to kill bacteria and can be lost within hours, leaving the pool prone to algae growth without the protection of a long term algicide treatment. Research shows that a low level of free chlorine is most effective in combination with an algicide, rather than relying on chorine alone. For best results, maintain pH between 7.2 and 7.6, a simple task in fibreglass, vinyl lined and tiled pools where pool surface is neutral.
Active constituent: 64g/kg Copper. Present as Copper Sulphate.


Pool Blocks

By: John on 16 April 2022
I have used this product some years ago. It was very effective in eliminating black algae. I stop using it because it become too costly. Recently I found your prices to be very competitive and hence I purchased from you. Delivery was very quick and it only took a few days to get rid of most of the black algae and all of the green algae. I am confident that with continuous use , all the black algae will be eliminated.

Pool blocks

By: Lou on 25 March 2022
Only product that effectively deals with black algae. Tried many other products that don’t work

Pool blocks

By: DIMA on 9 September 2021
Great service and great product!

Pool blocks

By: Brian Andrijich on 3 February 2021
Pleased with the product and the very quick delivery.

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