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THE WATKINS WATER MAINTENANCE QUICK REFERENCE GUIDE
Ideal Range (ppm) What Chemicals to Use
Steps Min
.
Max
.
To Raise To Lower
1 Total Alkalinity
40 120 Sodium Hydrogen Carbonate or
Sodium Bicarbonate
Sodium Bisulfate
2 Calcium Hardness 50 150 Calcium Hardness Increaser Use a mixture of 75%
hard water and 25% soft
water or use a Stain and
Scale Inhibitor
3 pH 7.2 7.6 Sodium Hydrogen Carbonate Sodium Bisulfate
4 Sanitizer See section on Maintaining the Sanitizer Level
FROG WATER CARE SYSTEM
The FROG Water Care system is comprised of the following products:
The FROG mineral cartridge that introduces minerals into the spa water, inhibiting bacteria growth. When combined with MONARCH MPS, it oxidizes particulates in
the spa water.
• The FROG Bromine is the only recommended sanitizer that will work in conjunction with the FROG mineral cartridge in this system.
• MONARCH MPS Non-Chlorine Shock is an oxidizing chemical used to prevent the buildup of contaminants, maximize sanitizer efficiency, and improve
water clarity.
• MONARCH Corona Discharge (CD) Ozone Generator (optional on select spas) - The MONARCH high output ozone system is the only ozone purification
system approved for installation in your CALDERA Spa. The MONARCH ozone system utilizes CD technology to produce a higher concentration of ozone
than is produced by competing chip style CD or ultraviolet light ozone systems.
It is important to follow the recommended application and maintenance programs outlined for each product’s use. If the spa is being used over an extended period or
time, such as a whole afternoon or evening, additional sanitizer will be needed.
A weekly “shock treatment” is required. The shock treatment quickly destroys any remaining contaminants while revitalizing the bromine in the water.
To weekly “shock treat” your spa, we recommend that you use either MONARCH MPS (sodium dichlor may also be used). Sodium dichlor may be a more appropriate
weekly shock for those users that experience heavy bather load conditions.
IMPORTANT NOTE: MONARCH MPS is an oxidizer, not a sanitizer.
FROG CARTRIDGE START-UP AND REPLACEMENT INSTRUCTIONS
The FROG bromine cartridge should be replaced every 2-4 weeks, depending on User Load. The FROG mineral cartridge should be replaced every 4 months. When
replacing the mineral cartridge, it is highly recommended that the spa be drained and refilled at the same time. After refilling the spa with water, balance the Total
Alkalinity (TA), Calcium Hardness (CH) and pH to the recommended levels. Shock the spa by adding MONARCH MPS non-chlorine shock.
To replace FROG cartridges, follow these steps:
1. Turn off power to the spa
2. Unscrew FROG cap on top edge of spa
3. Turn handle counter-clockwise
4. Lift cartridge holder up and out of spa
5. Add new cartridges or remove and discard old cartridges
6. Turn top cap of new Mineral cartridge to setting #6 (evaluate water in 1 week and adjust as necessary).
7. Turn top cap of new Bromine cartridge to setting #3 (measure Bromine with Bromine Test Strip in 2 days and adjust as necessary).
8. Snap bromine cartridge into the bottom of holder and snap mineral cartridge into the top
IMPORTANT: It is important that the bromine cartridge is on the bottom; otherwise, the bromine cartridge could dispense prematurely.
9. Reinstall cartridge holder into spa, push down, and twist clockwise.
10. Replace FROG cap
11. Reconnect power to the spa.
12. Add MPS (non-chlorine shock to sustain a residual of 1-2 ppm bromine.
Warning: High sanitizer levels can cause discomfort to the user’s eyes, lungs and skin. Always allow the sanitizer level to fall to the recommended range before
using the spa.
WATER QUALITY AND MAINTENANCE
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