 Back Up® Algae PreventativeThis 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 Makes water wetter, Sinks bugs to the bottom. Applying Back Up is STEP 3 of the BioGuard Once-a-Week 3-Step Program and the BioGuard 3-Step Program.Our Price: $18.99 |
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