FreshWater Chlorine Granules 2 lb | Spa Chlorine

FreshWater Concentrated Chlorinating Granules in the 2 lb size is the right starter for new chlorine-program spa owners, occasional users, and smaller spa setups where a 3.5 lb container would sit half-used for too long. Same fast-dissolving, pH-neutral sodium dichlor formula as the larger size — just sized for a more modest commitment. Dichlor is the chlorine specifically formulated for hot tubs. Standard pool chlorines — calcium hypochlorite (cal-hypo) and trichlor — are designed for outdoor pool volumes and chemistry, and will damage spa equipment over time. Cal-hypo raises calcium hardness with every dose, eventually scaling heaters and salt cells. Trichlor is acidic, driving pH down aggressively and corroding spa interiors. Dichlor is pH-neutral, dissolves quickly in spa-temperature water, and is the form chlorine should take when added to a residential hot tub. Two situations where the 2 lb size is the better choice than the 3.5 lb: New chlorine-program owners who want to try the FreshWater chemistry program before committing to a year's supply Salt System, ACE, or Ag+ Silver Ion owners who only use chlorine for periodic shock — not enough volume to justify a 3.5 lb container before it ages Smaller spas, plunge pools, and inflatable hot tubs with lower total water volumes Vacation homes and seasonal-use spas where the tub isn't running year-round For households running a chlorine program full-time on a typical 400-gallon spa, the 3.5 lb container is the better per-pound value. Pro Tip: Target sanitizer residual for a chlorine spa is 2–3 ppm of free available chlorine. Higher than 5 ppm means you should not enter the spa — let chlorine dissipate naturally before reuse. The most common new-owner mistake is over-dosing, then trying to soak before the chlorine drops back into range. Brand FreshWater®