HTH Spa Shock

Start-Up: 1 oz

Regular Use: 0.7 oz

Shock Treatment: 1.4 oz

Inert Ingredients 52.4%

Minimum Available Chlorine 45%

How to Use: 

1. For best results, see water balance section below before treatment. 
2. Maintain these conditions for proper operation by frequent testing with a test kit. 
3. Do not allow cyanuric acid level to exceed 100 ppm. 
4. It is recommended that spas and hot tubs be drained every 30-90 days, more often under heavy use. 
5. Consult manufacturers recommendations concerning the compatibility of chlorine sanitizers with their equipment. 
6. Some oils, lotions, fragrances, cleansers, and other additives may cause foaming or cloudy water and may react with chlorine sanitizers to reduce their efficiency. 
7. If circulation is low, stir water after addition of chlorine or other chemicals.

Water Balance: 

1. For best product performance, comfort, and cystal clear water: 
2. Maintain pH in the range of 7.2 to 7.6. 
3. Maintan total alkalinity in the range of 60 to 120 ppm. 
4. Maintain calcium hardness above 200 ppm. 
5. Use a reliable test kit that measures all these ranges. 
6. Use HTH Products to make adjustments. 
7. Follow label directions for each product. 
8. Allow the pH adjusters to dissolve and disperse before adding this product to the pool. 
9. Maintain these conditions for proper spa and hot tub operation by frequent testing with a test kit. 
10. It is recommended that spas and hot tubs be drained every 20-90 days, more often under heavy use. 
11. Consult manufacturers recommendations concerning the compatibility of chlorine sanitizers with their equipment. 

Note: Re-entry into treated spa or hot tub is prohibited above levels of 5 ppm free available chlorine due to risk of bodily harm. 

Regular Use: 

1. For best results, see water balance section above before treatment. 
2. Turn on circulation system and ensure that it is operating properly. 
3. Scatter up to 0.7 ounces of this product per 500 gallons over the surface of the water to obtain 5 ppm free available chlorine. 
4. Test for free available chlorine and add additional product if necessary to maintain 3-5 ppm FAC while unit is in use. 
5. Do not enter the spa until chlorine residual reaches 1-5 ppm. 
6. Test for free available chlorine and add additional product if necessary to attain a chlorine concentration of 1-5 ppm FAC. 

Opening Your Spa: Start Up: 

1. For best results, see water balance section above before treatment. 
2. Turn on circulation system and ensure that it is operating properly. 
3. Add 1 ounce of this product to provide approximately 10 ppm available chlorine for each 500 gallons of water. 
4. Check the free available chlorine (FAC) and if less than 4-5 ppm, repeat as needed. 

Shock Treatment: 

1. After each use, shock treat with 1.4 ounces of this product to provide approximately 10 ppm available chlorine per 500 gallons of water, to control odors and algae. 
2. Repeat as needed.