BioGuard Back Up 2 Algae Preventative 23050BIO spafilters Secure and simple

Secure and simple

Versatile use: Compatible with chlorine

Easy-to-use: simply dip the strip in water

XL SmartChlor cartridge holds about two‑thirds more sanitizer than a standard @ease cartridge

1 System Kit ( 1 Mineral Cartridge

BioGuard Back Up 2 Algae Preventative 23050BIO spafilters Secure and simpleBioGuard Back Up 2 Algae Preventative 23050BIO BioGuard Back Up 2 Highly Effective Algae Preventative stops algae before it crashes your pool partykeeping water sparkling and swims worry free. Wave Goodbye to Green Invaders! This powerhouse algaecide packs a non staining punch that prevents all sorts of algae with weekly dosing, ramping up protection exactly when warm water tempts trouble. Sun stable and non volatile, its surfactant sneaks into cracks