- Kills a wide range of algae
- Fast Acting
- Highly effective
- Effectively kills mustard algae
- Protection against staining
- Concentrated algaecide
MSA II is the newest and most effective rival against all types of swimming pool algae.
BioGuard® MSA II is a patented, non-staining pool algaecide, which is specially formulated for use in all types of swimming pools.