This spa water treatment is a shock to your spa's system in the best possible way. The Aquarius Spa Shock clears organic matter that builds up over time, helping maintain clean, fresh water for an invigorating soak. Use it once a week to give your hot tub a good shock that deactivates contaminants and restores sanitizer levels. The pre-measured formula makes dosing simple so you can spend more time enjoying your spa and less time measuring chemicals. Give your spa water the reset it needs to feel silky smooth on your skin and deliver therapeutic benefits with this convenient hot tub shock treatment.