• Controls algae, slime, black spot and unwanted wall growth in swimming pools
• Keeps water sparkling clear
• Simply add to the skimmer box

The Algaefree Pool Block is a high strength algaecide tablet. Copper based for long life, it rapidly controls algae, slime, black spot and unwanted wall growth in swimming pools. Simply add to the skimmer box to keep your pool water sparkling clear for up to 5 months. Contains 5 x 300g blocks.