Freshwater Silver Ion Mineral Sanitizer – Hot Spring 71325 Buyer’s Guide

Keep your spa water clean, clear, and fresh with the Freshwater Silver Ion Mineral Sanitizer – Hot Spring 71325. Designed for use in Hot Spring® spas and compatible models, this cartridge-based sanitizer offers a natural, low-maintenance way to reduce bacteria and maintain healthy water between water changes. It’s a simple yet effective solution for spa owners looking to cut back on harsh chemicals while enjoying clean, gentle water.

What Is the Freshwater Silver Ion Mineral Sanitizer?

The Freshwater Silver Ion Mineral Sanitizer (part number 71325) is a cartridge that slowly releases silver ions into your spa water. Silver is a powerful natural bactericide, and when used alongside a low dose of chlorine or another oxidizer, it helps control bacteria growth without the strong smell or skin irritation of traditional sanitizers.

• OEM cartridge designed for Hot Spring® spas

• Helps control bacteria growth between cleanings

• Works with minimal chlorine levels

• Easy drop-in design – installs in seconds

• Lasts up to 4 months with consistent use

Benefits of Using the Hot Spring 71325 Silver Ion Cartridge

The Hot Spring 71325 Silver Ion Sanitizer is ideal for spa owners who want clean water with fewer chemicals. It reduces the need for high levels of chlorine or bromine, leaving your spa water softer on your skin, hair, and eyes.

• Natural silver-based water sanitation

• Enhances comfort with lower chemical use

• Reduces chemical odors and skin dryness

• Works continuously for long-lasting protection

• Compatible with most Hot Spring® spa filters with a designated cartridge chamber

How to Use the Freshwater Silver Ion Mineral Sanitizer

The cartridge is easy to install—just place the 71325 sanitizer into the designated chamber in your spa’s filter compartment. It starts working immediately, dispersing silver ions throughout the water. Replace every four months or sooner if your spa is used frequently.

For best results, use in combination with a low level of chlorine and follow your spa manufacturer’s water care guidelines.

Genuine OEM Quality You Can Trust

The 71325 Freshwater Silver Ion Sanitizer is an original Hot Spring® part, designed to fit and function perfectly with your spa system. Unlike generic alternatives, this OEM cartridge is guaranteed to provide reliable performance and maximum sanitizing effectiveness.

Frequently Asked Questions – Freshwater Silver Ion Mineral Sanitizer 71325

How long does the Freshwater Silver Ion Sanitizer last?
The cartridge lasts up to four months under normal usage conditions. For heavily used spas, you may need to replace it more frequently.

Do I still need chlorine if I use the 71325 Silver Ion Cartridge?
Yes. Silver ions help control bacteria, but a small amount of chlorine or oxidizer is still needed to fully sanitize the water and maintain proper balance.

Is this cartridge compatible with all Hot Spring spas?
The 71325 Freshwater cartridge fits most Hot Spring® spas with a filter cartridge chamber designed for mineral sanitizers. Check your owner’s manual or contact us to confirm compatibility.

Can I use this with other spa brands?
This sanitizer is optimized for Hot Spring® spas. It may work in other brands with a compatible chamber, but performance cannot be guaranteed unless specified by the manufacturer.