Suncoast Chemicals Extended Algae Control Algaecide as an effective algae treatment to kill algae and prevent algae growth. Extended Algae Control Algaecide kills and prevents blue-green, black and mustard/yellow algae. Perfect for pools in hot, humid climates. Active ingredient: 11.8% Copper Sulphate Pentahydrate.
- Single treatment lasts 3 months
- Simple to use
(Note: Balance pool water before using Extended Algae Control)