BioGuard® Back Up®

This is BioGuard's most effective algae preventative. Works well in chlorinated and brominated pools. A powerful surfactant/wetting agent makes Back Up able to work in tiny cracks and crevices where algae start.

• Highly effective algae preventative and algae killer
• Keeps pool water clear and free of visible algae
• Activity increases as water temperature rises (and you need protection the most)
• Will not affect pH levels
• Non-staining

Back up should be used with these BioGuard Care Systems: 3-Step, Once-A-Week 3-Step, and Pool Pods.