Pool Blocks all seasons algaecide is an extra strength, slow release solid tablet algaecide suitable for all chlorine and salt water pools. Eliminating all forms of Green, Mustard and Blackspot Algae long term to deliver outstanding results in harsh environments.

Using regularly stops your pool from turning Green when chlorine levels fall making pool care simple while saving you Money.

Directions for use: 

Key Steps:

1. Place Pool Blocks in skimmer box
2. Adjust pH to between 7.2 – 7.6 and maintain during treatment
3. Clean backwash and run filter regularly
4. Use stiff bristled brush weekly to remove any hard outer crusts
5. A monthly maintenance dose is recommended if algae growth persists