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How to Set Up a Salt Water Hot Tub: A Guide for Hot Spring Spas

Posted by Watson's on Jun 7, 2024 9:10:05 AM

Switching to a salt water hot tub offers numerous benefits, including reduced maintenance, softer water, and fewer chemicals. If you own a Hot Spring Spa, setting up a salt water system is straightforward and highly rewarding. This guide will walk you through the process of setting up your Hot Spring Spa for a salt water system, ensuring you enjoy a clean, relaxing soak every time.


Why Choose a Salt Water Hot Tub?

Before diving into the setup process, let's explore why a salt water system is a fantastic choice for your hot tub:

  • Low Maintenance: Salt water systems reduce the need for frequent chemical balancing and water changes.
  • Softer Water: Salt water is gentler on your skin, eyes, and hair.
  • Environmentally Friendly: Fewer chemicals mean a more eco-friendly hot tub experience.


Step-by-Step Guide to Setting Up a Salt Water Hot Tub

1. Gather Your Supplies

Before you start, make sure you have all the necessary supplies:

2. Drain and Clean Your Hot Tub

Start with a clean slate:

  1. Drain the Water: Completely drain your hot tub.
  2. Clean the Shell: Use a mild, non-abrasive cleaner to clean the interior of your spa.
  3. Rinse Thoroughly: Ensure all cleaning residue is rinsed off.

3. Fill Your Hot Tub with Fresh Water

Refill your hot tub with fresh, clean water. Use a pre-filter to remove any impurities that might affect water quality.



4. Add Salt

Refer to the Hot Spring FreshWater® Salt System manual for the correct amount of salt to add based on your spa model. Generally, you'll need about 2.5 pounds of salt for every 100 gallons of water.

  1. Turn on the Jets: Run the jets to circulate the water.
  2. Add Salt: Slowly pour the salt into the filter compartment to help it dissolve more quickly.

5. Install the FreshWater® Salt System Cartridge

  1. Access the Cartridge Compartment: Open the cartridge compartment as described in your spa’s manual.
  2. Install the Cartridge: Insert the FreshWater® Salt System Cartridge into the holder.
  3. Activate the System: Turn on the salt water system according to the instructions.

6. Balance the Water

Using FreshWater® Test Strips, test and adjust the following:

  • pH Levels: Ideal range is 7.2-7.8.
  • Alkalinity: Should be between 80-120 ppm.
  • Calcium Hardness: Aim for 150-250 ppm.

7. Monitor Chlorine Levels

Your FreshWater® Salt System will generate chlorine from the salt. Initially, test the water daily to ensure chlorine levels stay between 1-3 ppm. Adjust the system settings as needed to maintain proper levels.


Hot Spring Hot Tub Salt Water With Fountain

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Maintenance Tips for Your Salt Water Hot Tub

  • Regular Testing: Use FreshWater® Test Strips weekly to monitor water quality.
  • Clean the Filter: Rinse the filter every month to maintain efficiency.
  • Replace the Cartridge: The FreshWater® Salt System Cartridge typically lasts four months, so replace it as needed.


For more tips and insights on maintaining your hot tub, be sure to check out our blog What Chemicals Do I Need for a Hot Tub. This comprehensive guide will help you keep your hot tub water clean and balanced, ensuring a safe and enjoyable soak every time.


Frequently Asked Questions

Can I convert my existing hot tub to a salt water system?

Yes, you can convert your existing hot tub to a salt water system if it is compatible. Ensure your hot tub is compatible with a salt water system, and follow the manufacturer's instructions for installing and maintaining the system. Hot Spring Spas offer the FreshWater® Salt System, designed for easy conversion.

How often do I need to replace the salt water system cartridge?

The FreshWater® Salt System Cartridge typically needs to be replaced every four months, depending on usage and maintenance. Regular testing and proper water balance can help extend the life of the cartridge.

Topics: Spas and Hot Tubs

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