BioGuard MSA Extreme kills all types of algae in swimming pools. MSA Extreme contains a patented chelate that prevents staining that commonly occurs with other copper-based algaecides. It does not affect pH.Â
Simply pour around the pool following an oxidation treatment to treat algae and add a small amount each month for ongoing prevention.
Not recommended for pool systems with ORP sensing probes. Use Polyguard as an alternative.
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