BioGuard SoftSwim A | Biguanide Pool Algaecide Brand_FreshWater Turn your old cartridge over

Turn your old cartridge over before ordering — that one look settles it

Do not backwash for 48 hours after application of this product

It is formulated to clear up water while it kills the algae and is approved for use in chlorine and bromine pools

It's a quiet upgrade to almost every part of the spa experience without changing your dispenser or system

It works on all types of spa filter cartridges and can be used two ways: a quick spray-on clean

BioGuard SoftSwim A | Biguanide Pool Algaecide Brand_FreshWater Turn your old cartridge overBioGuard SoftSwim A is the algaecide component of the SoftSwim program BioGuard's completely chlorine free approach to pool care. It's Step A of a three part system, and on a biguanide pool it carries more weight than an algaecide does anywhere else. SoftSwim is built for people who don't want chlorine in their water at all. Not less chlorine none. The sanitizer in the program is a biguanide, a completely different class of chemistry that kills