Australia's most sought after Premium Algicide. Pool Blocks all season algaecide is an extra strength, slow release solid tablet that works with all chlorine and salt water pools. Eliminates all forms of green, mustard and black algae. They contain twice the active ingredient and are a favourite of commercial pools.
Thank you, I just wish more pool supply places carried this amazing product. Pool Blocks has been the most amazing discovery since owning a pool. It would be my first recommendation to ANYONE who owns a pool. Since using this product, I have had zero problems maintaining perfect water chemical levels.
Tried Pool Block out this season and have had no algae problems at all. Very satisfied with this product...ordering more today.