BioGuard's Back Up® 2 Algae inhibitor is an extremely effective algaecide that prevents all types of algae (including green algae, black algae, and yellow algae) from gaining access to your pool.
- Powerful wetting agents stop algae where it starts
- Use as Step 3 in the BioGuard 3-Step Care System
- For use with above and in-ground pools
- Use once a week
BioGuard Back Up® 2 has no risk of staining pool surfaces, does not affect water pH, and is completely stable in sunlight - removing any concern of evaporation or deterioration. The powerful wetting agents in this product help get into the smallest nooks and crevices of your pool's surface, stopping algae growth before it can get started.
Always follow label instructions, dosages are provided here to inform your purchase decisions. These dosages are not meant as a replacement for label instructions.
Initial Application: 6oz per 10,000 gallons of water.
Maintenance Application: 1.5oz per 10,000 gallons of water every 5-7 days and after heavy rain/refills.
Visible Algae: 13.5oz per 10,000 gallons of water. Repeat after 24 hours as necessary.