SPAGUARD SPA SENTRY is an easy, one-step liquid for maintaining a stable, comfortable pH and softening your spa's water. It makes balancing the water extremely simple, eliminating the need for many other water balancing treatments you may currently be using.

Controlling the pH of your spa's water is an important part of maintenance. SpaGuard Spa Sentry not only establishes establishes proper pH, but prevents pH from "drifting" so your spa and its equipment are protected. At the same time, it softens the ater by removing dissolved calcium, for a cleaner, more comfortable spa. SpaGuard Spa Sentry enhances water clarity and helps prevents stains from dissolved metals in fill water. The result is a spa that is easier to maintain and enjoy.  DO NOT USE IN PLASTER OR TILE-SURFACE SPAS.

Measurment and dosing: 

One quart (one bottle) per 300-500 gallons.

Directions for use:

1. First, drain and clean the spas surfaces with SpaGuard Surface Cleaner and clean the filter with SpaGuard Filter Cleaner & Degreaser.
2. Refill your spa with fresh water. Important: The heater should be off before the addition of Spa Sentry. The heater should remain off until all cloudiness has been cleared by filtration.
3. All additions of product should be made with the spa water circulating.
4. If your fill water has calcium hardness less than 150 ppm (195 ppm total hardness) add1 quart (1 bottle) of Spa Sentry per 300 to 500 gallons of spa water.
5. If dissolved calcium is present, the water softening action of Spa Sentry will precipitate the calcium, allowing your filter to remove it.
6. The water may cloud when product is added, indicating that Spa Sentry is working to remove excess calcium.
7. If clouding occurs, circulate the spa for 24 hours.
8. Then remove cartridge filters and rinse away excess calcium with strong stream of water.
9. Backwash sand and D.E. filters.
10. If your fill water has calcium hardness greater than 150 ppm (195 ppm total hardness) a total of 2 quarts of Spa Sentry will be needed for each 300 to 500 gallons of water.
11. Add the first quart of Spa Sentry and circulate the spa water through the filtration system for 24 hours (use high speed if 2 speed pump).
12. Clean the filters (rinse cartridges or backwash sand or D.E.).
13. Add the second quart of Spa Sentry, and circulate the spa water through the filtration system for 24 hours.
14. Clean filter again.
15. If your fill water has calcium hardness greater than 300 ppm (390 ppm total hardness), consult your BioGuard Dealer before using this product.

NOTE: if pH of fill water is 7.6 or higher and total alkalinity exceeds 150 ppm, it will be necessary to add sufficient SpaGuard pH Decreaser to reduce the pH to 7.4. This water balance adjustment is only necessary when pH and total alkalinity are both high.

This treatment establishes a stable pH range of 7.2-7.8. Weekly testing of pH is recommended. Should pH begin to drop, add 1 quart of SpaGuard Spa Sentry per 300 to 500 gallons of water. If spa is not drained and refilled within 60 days, add 1 quart of SpaGuard Spa Sentry after 60 days.