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FreshWater Ag+ Silver Ion Sanitizer

SKU: 80010
$34.39

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Description

FreshWater Ag+ Silver Ion Sanitizer

Overview

The FreshWater Ag+ Silver Ion Sanitizer is a drop-in cartridge that releases a continuous, low-level dose of silver ions into your spa water for four months — inhibiting bacterial growth and dramatically reducing how much chlorine or bromine you need to keep the water clean. Owners who add Ag+ to their water care routine typically use 50–75% less primary sanitizer, eliminating the chemical odor and skin irritation that turn off so many hot tub users.

How it actually works (and why it matters): Silver ions don't replace your primary sanitizer — they make it work more efficiently. The Ag+ cartridge releases silver ions that suppress bacteria, while a much smaller dose of chlorine or bromine handles oxidation. The result is cleaner-feeling water with the chemical smell turned way down — not a chemical-free spa.

What’s in the Box 

  • 1 × FreshWater Ag+ Silver Ion Sanitizer cartridge (handle and body)

Key Benefits

  • Reduces primary sanitizer use by 50–75% — less chlorine or bromine to buy, store, and add
  • Cuts the chemical smell dramatically — most owners notice the difference within the first day
  • Less skin and eye irritation — lower chlorine residual means a softer, more natural-feeling soak
  • Continuous protection — silver ions release steadily for four full months
  • Drop-in installation — slides into your filter standpipe in seconds, no tools required
  • Compatible with every major sanitizer system — chlorine, bromine, ozone, biguanide, FreshWater Salt System, and ACE Salt System
  • EPA-registered antimicrobial — silver ion technology is recognized for water sanitization use

Ingredients

  • Silver Chloride: 0.5%
  • Other Ingredients: 99.5%

Directions

  1. Drain and refill your spa with fresh water if it's time for a water change.
  2. Balance your water chemistry first — pH (7.2–7.8), alkalinity (80–120 ppm), and calcium hardness in range — before installing the cartridge.
  3. Shock the spa with an EPA-registered chlorine source (typically 1.5 tablespoons of dichlor per 250 gallons) to kill any existing bacteria and "activate" the system.
  4. Attach the handle to the cartridge body to create a single unit.
  5. Remove the gray cap from your spa's filter standpipe.
  6. Drop the cartridge into the standpipe with the handle facing up.
  7. Replace the cap onto the standpipe.
  8. Run your filter cycle for at least 3 hours per day.
  9. Maintain a low residual of chlorine (1–2 ppm) or bromine (2–3 ppm) as your primary sanitizer.
  10. Replace the cartridge every 4 months, or each time you drain and refill — whichever comes first.

    Compatibility

    • The FreshWater Ag+ Silver Ion Sanitizer is designed to drop into the gray filter standpipe found in Watkins Wellness spas. Confirmed fitment includes:
    • For spas up to 600 gallons. Larger spas may require two cartridges. If you're not sure whether your spa has the gray filter standpipe required for this product, check your owner's manual or call our service team.

    Brand

    FreshWater® 

    Warranty Policy

    Most products purchased from our online shop within the last 30 days are eligible for return. Please review our return policy to see the list of items that cannot be returned.

    Some major items that are non-returnable:

    • Gift cards
    • Electronics
    • Pumps / Motors
    • Hot Tubs
    • Closeouts
    • Fireplaces
    • Electric Fireplaces
    • Massage Chairs
    • See return policy below for full list of non-returnables.