One Tablet is All You Need
Less Dangerous Chemicals
Easy & Effective
How to use One Shock.
With jets running, toss one tablet of EcoOne One Shock directly into spa water or filter compartment. Wait 5 minutes and check chlorine/sanitizer levels. It should read between 2 to 3 ppm.
Add two tablets of EcoOne One Shock to your spa for every 450 gallons of water. Thoroughly clean spa filter and rinse clean.