BioGuard Back Up 2 Algae Preventative 23050BIO spafilters 000 gallons startup (weekly Renewal

000 gallons startup (weekly Renewal after)

1 System Kit ( 1 Mineral Cartridge

Two-in-one cartridges: mineral half lasts 4 months

Usage: Pair with mineral cartridge

Function: High-efficiency cartridge filter for debris and contaminant removal

BioGuard Back Up 2 Algae Preventative 23050BIO spafilters 000 gallons startup (weekly RenewalBioGuard 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