BioGuard Back Up Algae Prevent

This is BioGuard's most effective algae preventative.



Highly effective formula prevents wide variety of algae growth

Stable in sunlight and will not evaporate

Activity increases as water temperature rises (and you need protection the most)

Powerful surfactant/wetting agent makes Back Up able to work in tiny cracks and crevices where algae starts

Will not affect pH levels

Non-staining