In The Swim Sodium Dichlor Chlorine Shock

This formula is calcium-free, which is a significant advantage if you live in an area with hard water. Traditional calcium hypochlorite shocks can contribute to scale buildup and cloudy water in hard water environments, whereas this sodium dichlor formula prevents that residue from forming.

Yes, this product is safe for use in spas and hot tubs. Because it is stabilized and fast-dissolving, it effectively sanitizes smaller volumes of water without leaving behind the cloudiness or scale often associated with other shock treatments.

You should wait until the chlorine levels return to a safe range, typically between 1 and 3 ppm, before re-entering the water. Because this is a fast-dissolving granular formula, it usually disperses quickly, but you should always test the water with a kit to confirm it is safe.

Yes, this product is stabilized, meaning it includes cyanuric acid to protect the chlorine from being degraded by the sun's UV rays. This allows the sanitizer to remain active in your pool water for a longer period, making it more efficient for routine maintenance.

It is versatile enough for both. You can use it as a regular sanitizer to maintain consistent chlorine levels or as a shock treatment to clear up cloudy water and eliminate organic contaminants after heavy use or a storm.