Non-foaming solid algicide kills green, mustard algae and black algae growing on the walls of swimming pools. It is not affected by sunlight and keeps water sparkling clear.
1. Place on Pool Block per 25,000 L of pool water in the skimmer basket when pump is running.
2. If algae persists, a montly maintenance dose of one Pool Block per 50,000 L is recommended
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.