Once-A-Week 3-Step The Once-A-Week 3-Step Program From start to finish, the Once-a-Week 3-Step program takes just minutes of your time, only once-a-week! That’s minutes, instead of hours, to keep your pool water crystal clear and brilliant. BioGuard’s Once-a-Week 3-Step Program is Ideal for: Pools up … Continue reading Once-A-Week 3-Step