FreshWater Spa Salt 10 lb | Salt System Refill

• 1 × 10-pound bag of FreshWater Spa Salt — sealed, pure spa-grade sodium chloride
• Measuring scoop — included inside the bag for accurate 1-cup dosing
• Dosage chart — printed directly on the bag, matched to spa gallon capacity

• Genuine Watkins Wellness FreshWater Spa Salt — formulated by the same company that builds Hot Spring and Caldera spas
• Spa-grade purity — no iodine, no anti-caking agents, no metals or impurities that would damage the cartridge or stain the spa shell
• 10-pound bag — the standard size that ships with FreshWater Salt System start-up kits
• Includes measuring scoop — calibrated for accurate 1-cup dosing
• Dosage chart on the bag — match your spa's gallon capacity to the right amount of salt
• Compatible with both salt systems — works with the FreshWater Salt System and the legacy Hot Spring ACE system
• Dissolves cleanly — no cloudiness or residue when added per directions
• Not consumed by the system — once dissolved, salt only needs to be added when water is added or replaced

FreshWater Spa Salt is sodium chloride — the same chemical compound as table salt, but in a purified spa-grade form. When you add it to your spa water, it dissolves completely and separates into sodium ions and chloride ions, which stay suspended in the water.

From there, the salt system cartridge does the work:

• The cartridge runs an electrical current through the salty water across its titanium electrodes
• The current converts chloride ions into pure chlorine — the same sanitizer you'd add manually, just generated automatically and on demand
• The chlorine sanitizes the water — destroying bacteria, viruses, and contaminants
• Used chlorine eventually breaks back down — and the chloride ions return to the salt cycle to be converted again

Because the salt itself isn't consumed in this process, a properly salted spa only needs more salt when water is added (after evaporation, top-offs, or a drain-and-refill). The cartridge wears out — the salt does not.

Pro Tip: A common myth is that salt-system spas "feel salty" like ocean water. They don't. The salt concentration in a FreshWater Salt System spa is roughly 1,750 ppm— about 1/20th the saltiness of the ocean, and similar to the salinity of a human tear. The water feels softer, not salty.

Initial Fill (New Spa or Fresh Drain-and-Refill)

1. Fill the spa with fresh water and bring it up to operating temperature. Water should be circulating before adding salt.
2. Balance the water first — adjust alkalinity to 80–120 ppm, then pH to 7.2–7.8. Add calcium hardness if below 150 ppm.
3. Reference the dosage chart on the bag — match your spa's gallon capacity (printed on the spa shell or in your owner manual) to the recommended salt amount.
4. Add salt one cup at a time using the included measuring scoop. Distribute around the spa rather than dumping in one spot.
5. Run the spa with the cover off in circulation mode for several hours to fully dissolve the salt.
6. Test salt level with FreshWater Salt Test Strips. Target is approximately 1,750 ppm (1,500–2,000 ppm acceptable range).
7. Adjust if needed — add more salt if reading is low, or dilute by removing some water and adding fresh if reading is high.

Topping Off Salt

Add salt as needed when:

• Water is added to compensate for evaporation or splash-out
• Salt test reading drops below 1,500 ppm
• The spa controller indicates a low salt level

For top-offs, add 1–2 cups at a time, dissolve fully, and retest before adding more. Over-salting is just as problematic as under-salting — it can damage equipment and force a partial drain.

Storage

• Store the bag in a dry location — moisture causes clumping
• Reseal between uses — fold the bag closed and clip or use the measuring scoop to keep moisture out
• Indefinite shelf life — pure sodium chloride does not expire if kept dry and sealed
• Keep away from children and pets — while non-toxic in small quantities, large ingestion is harmful

Pro Tip: Always test your salt level before adding more. The single most common salt system mistake is over-salting because owners assume "more is better." The cartridge generates chlorine based on the current setting, not the salt concentration — adding extra salt does not produce extra chlorine, it just stresses the equipment.

• Brand: FreshWater® (Watkins Wellness)
• Manufacturer Part Number / SKU: 80000
• Net Weight: 10 pounds (1 bag)
• Composition: Pure spa-grade sodium chloride (NaCl)
• Additives: None — no iodine, no anti-caking agents, no metallic impurities
• Target Salt Concentration in Spa: ~1,750 ppm (1,500–2,000 ppm acceptable range)
• Includes: Measuring scoop and dosage chart printed on bag
• Compatible Systems: FreshWater Salt System, Hot Spring ACE Salt Water Sanitizing System
• Compatible Spa Lines: Hot Spring Highlife, Hot Spring Limelight, Caldera Utopia, Caldera Paradise (Salt System-equipped); older Hot Spring spas with ACE
• Not Compatible With: Pool salt systems, non-Watkins spa brands, spas without an installed salt cell
• Shelf Life: Indefinite when stored sealed and dry
• Hazmat Classification: Non-hazmat — eligible for mail return per standard policy
• Country of Origin: Manufactured for Watkins Wellness, USA

FreshWater Spa Salt is formulated for two Watkins Wellness saltwater sanitizing systems. Both use a titanium-electrode cartridge to convert salt into chlorine, and both require the same spa-grade salt purity.

Compatible Systems

• FreshWater® Salt System — the current generation, available on Hot Spring Highlife / Limelight and Caldera Utopia / Paradise models
• Hot Spring® ACE® Salt Water Sanitizing System — the prior generation system, found on older Hot Spring models

Compatible Spa Lines

• Hot Spring® Highlife® Collection — Salt System-equipped models
• Hot Spring® Limelight® Collection — Salt System-equipped models
• Caldera® Utopia® Series — Salt System-equipped models
• Caldera® Paradise® Series — Salt System-equipped models
• Older Hot Spring spas equipped with the ACE Salt Water System

Not For

• Spas without a salt system installed — adding salt to a spa without a salt cell does nothing useful and may increase corrosion on metal components
• Pool salt systems — the dosing is calibrated for spa volume, not pool volume; pool salt requirements are entirely different
• Other manufacturers' spa salt systems (Sundance, Jacuzzi, Bullfrog, Marquis, etc.) — those systems have their own brand-specific salt requirements; check your spa's manual

Works Alongside

• FreshWater Salt System Replacement Cartridge — the cell that actually converts the salt into chlorine
• FreshWater Salt Test Strips — for measuring salt level when topping off or refilling
• FreshWater Vanishing Act Calcium Remover — keeps calcium hardness in range so the salt system operates efficiently
• FreshWater pH/Alkalinity Up and Down — keeps water balanced so the cartridge isn't working overtime