How to Convert A Hot Tub to Saltwater?

24 minutes read

Converting a hot tub to saltwater can offer several advantages, including reduced maintenance and a more enjoyable bathing experience. Here is a step-by-step guide on how to convert your hot tub to saltwater:

  1. Research: Begin by researching the specific requirements and compatibility of your hot tub model with a saltwater system. Consult your hot tub's manufacturer or manual for guidelines and recommendations.
  2. Drain the hot tub: Start by completely draining the hot tub of all water. Ensure that the power source is disconnected while you perform this step.
  3. Remove existing components: Remove any existing components in your hot tub that are not compatible with saltwater. This may include the ozone generator, mineral cartridge, or other accessories. Follow your manufacturer's instructions or seek professional help if required.
  4. Clean the hot tub: Thoroughly clean your hot tub, including the shell, plumbing lines, and filters. Use a mild cleaner or specially formulated hot tub cleaner to remove any residual bacteria or debris.
  5. Install a saltwater system: Purchase a saltwater system that is suitable for your hot tub's size and specific requirements. Ensure that the system is designed for hot tub use and not a pool, as the requirements differ.
  6. Follow the manufacturer's instructions: Install the saltwater system according to the manufacturer's instructions. This typically involves attaching the control panel and cell, connecting the appropriate plumbing lines, and adjusting the settings as recommended.
  7. Add salt to the water: Fill your hot tub with fresh water, leaving enough space for the salt to be added. Measure and add the required amount of salt based on your hot tub's capacity and the manufacturer's instructions. Use pure, non-iodized pool-grade salt or a salt specific to hot tub use.
  8. Activate the system: Once the salt has dissolved, activate the saltwater system and set the desired level of chlorine production. This process may vary depending on your specific system, so refer to the manufacturer's instructions.
  9. Regular maintenance: Monitor your hot tub's chemical levels regularly and adjust as needed. The saltwater system will continuously produce chlorine, eliminating the need for traditional chlorine additives in most cases. However, it's still important to maintain proper water balance and clean the filters regularly.
  10. Enjoy your saltwater hot tub: With the conversion complete, you can now enjoy your hot tub's saltwater experience. Remember to periodically check the salt level and clean the cell according to the manufacturer's instructions.


Note: It is advisable to consult with a professional or a qualified technician, especially if you are not confident in performing the conversion process yourself.

Best Hot Tubs of April 2024

1
MSPA, Oslo, Frame Series, Fixed Body, Movable, Hot Tub & Spa, Wi-Fi, App Controlled, Jets & Bubble System – 6 Person

Rating is 5 out of 5

MSPA, Oslo, Frame Series, Fixed Body, Movable, Hot Tub & Spa, Wi-Fi, App Controlled, Jets & Bubble System – 6 Person

  • EASY ASSEMBLY: Plug & play system & simple 4 easy screws on 4 corners, no tools required and rest is all plug in modules. Hard Body frame with Rhino Tech 6 layer reinforced PVC inner liner
  • WI-FI ENABLED & APP CONTROLLED: Say goodbye to the days of reaching over your spa or worse having to get out of your relaxing soak just to change some settings. Have full control of your MSpa at all times right at your fingertips. Enjoy the easiest operation and usability through our intuitive UI. Easily receive tips, notices, and alarm messages on the go so you’re always in the loop.
  • OLED TOUCH SCREEN: All your spa controls in one convenient unit! Easily control your spa from your easy to use control center. Our newest all-in-one control box now features a protective cover to shield from harsh outdoor elements such as direct sunlight and extreme weather conditions.
  • HYDROMASSAGE JETS PLUS: Going beyond just comfort, hydromassage provides amazing health benefits for your mental and physical health. Enjoy an immersive at home experience that has been shown to relieve muscle soreness and tension, soothe minor aches and pains, and reduce stress and anxiety.
  • LED LIGHT - LIGHT UP THE NIGHT: Take your spa experience to the next level with beautiful lighting. Our light up spas feature an LED light strip at the bottom to make your spa GLOW. Translucent fabric elements allow beautiful patterns to shine through for a truly romantic environment for your evening soaks. Switch colors based on your mood and enjoy late into the night.
  • REVOLUTIONARY FIXED BODY: HOT TUB & SPA option for houses, apartments, buildings, or tight spaces that does not have access to move a normal Fixed Frame Hot Tub over the roof.
2
Intex PureSpa Plus 6 Person Inflatable 94" Square Outdoor Hot Tub Spa with 170 Bubble AirJets, Insulated Cover & LED Color Changing Lights, Greystone

Rating is 4.9 out of 5

Intex PureSpa Plus 6 Person Inflatable 94" Square Outdoor Hot Tub Spa with 170 Bubble AirJets, Insulated Cover & LED Color Changing Lights, Greystone

  • ✔ FIBER-TECH BEAM CONSTRUCTION – Innovative Fiber-Tech Technology offers superior structural stability while maintaining a comfortable surface for a luxorious and refreshing spa experience
  • ✔ THE ULTIMATE SPA EXPERIENCE – Control all Spa functions from your phone or tablet; program Spa use and maintenance remotely with WIFI connectivity; available on App Store and Google Play App
  • ✔ REMOVABLE WIRELESS CONTROL PANEL – The Greystone Deluxe PureSpa includes a removable wireless control panel that features integrated wireless charging; 48 hours of operation on a single charge and conveniently attaches to top of the tub
  • ✔ PREMIUM ACCESSORIES – Everything you need for pure relaxation! Let your worries bubble away with 2 contoured headrests, an energy efficient spa cover, and a mood-setting multi-colored LED light (requires 3 AAA batteries, not included)
  • ✔ BUILT-IN FASTFILL INFLATION SYSTEM – Designed with a convenient FastFill inflation system; just simply inflate and deflate at a touch of a button, no external hose needed
3
Coleman SaluSpa Sicily AirJet 2 to 7 Person Inflatable Hot Tub Round Portable Outdoor Spa with 180 Soothing AirJets and Insulated Cover, Gray

Rating is 4.8 out of 5

Coleman SaluSpa Sicily AirJet 2 to 7 Person Inflatable Hot Tub Round Portable Outdoor Spa with 180 Soothing AirJets and Insulated Cover, Gray

  • SaluSpa Sicily AirJet hot tub provides a soothing massage experience with 180 bubbling warm jets for up to 7 people while reaching up to 104 degrees Fahrenheit for ultimate relaxation
  • Features Freeze Shield automatic heating function to prevent inner components from freezing and 2 easy-lift, built-in handles for easy transport; Water capacity (80 percent filled): 314 gallons
  • Includes a reinforced cover that holds in heat when the spa isn't in use and helps keep dust and debris out of the water, pump, ChemConnect dispenser, filter cartridge, and repair patch
  • Shipping restrictions may apply since this model is not available for sale in the following states: CA, MA, ME, NJ, NV, NY, OR, and RI; Buy only model with energy-efficient EnergySense thermal cover
4
Life Smart 4 Person Plug and Play Thermal Friction Heating Square Hot Tub Spa with 13 Jets, Cover, and Multi Color LED Lighting System, Taupe

Rating is 4.7 out of 5

Life Smart 4 Person Plug and Play Thermal Friction Heating Square Hot Tub Spa with 13 Jets, Cover, and Multi Color LED Lighting System, Taupe

  • Provides relaxation at the touch of a button for up to 4 people with the convenient digital command center with a quick assembly, no need for custom wiring or installation
  • Pampering yourself is easy with the 13 hydrotherapy high-powered jets with an underwater, multi-color LED light system, giving you the ultimate spa experience
  • Energy efficient and exceeds California Energy Commission mandates for hot tub energy consumption, so there is no need to turn the temperature down while not in use
  • Innovative thermal friction heating system eliminates the need for a separate heater with full-foam insulation, and the included thermal locking cover will keep the heat in
  • Water capacity of 205 gallons with an exterior of 70 inches long, 61 inches wide, and 32 inches tall, while the interior measures 57 inches wide and 28 inches tall
5
Bestway Miami SaluSpa 2 to 4 Person Inflatable Round Outdoor Hot Tub Spa with 140 Soothing AirJets, Filter Cartridges, Pump, & Insulated Cover, Black

Rating is 4.6 out of 5

Bestway Miami SaluSpa 2 to 4 Person Inflatable Round Outdoor Hot Tub Spa with 140 Soothing AirJets, Filter Cartridges, Pump, & Insulated Cover, Black

  • Round 2 to 4-person spa has you relaxed in no time with a soothing massage system, rapid heating, and integrated water filtration
  • Built-in AirJet system with 140 jets releases warm air into the water, while the digital control panel adjusts the temperature up to 104 degrees Fahrenheit
  • Features a FreezeShield automatic heating function to prevent inner components from freezing during colder temperatures to ensure long-lasting use
  • Includes a pump, an insulated cover, cupholders, ChemConnect dispenser to main clean water, filter cartridges, and repair patch
  • Constructed of durable DuraPlus materials with cushioned, comforting floors and a convenient drain valve for ultimate stability; Dimensions (L x W x H): 71 x 71 x 26 inches
6
Coleman SaluSpa AirJet 2 to 4 Person Round Inflatable Hot Tub Portable Outdoor Spa with 60 Soothing AirJets and Insulated Cover, Black

Rating is 4.5 out of 5

Coleman SaluSpa AirJet 2 to 4 Person Round Inflatable Hot Tub Portable Outdoor Spa with 60 Soothing AirJets and Insulated Cover, Black

  • Relaxing inflatable spa ensures ultimate relaxation in comforting warm water with the 2 to 4-person hot tub that has 60 soothing air jets and a water capacity of 192 gallons
  • Made of durable materials and cushioned floors that hold strong against the elements for stability and comfort allowing you to indulge in relaxation regardless of weather conditions
  • Built with a digital control panel that allows you to adjust the temperature and jets without leaving the tub ensuring a seamless and enjoyable soaking experience
  • Equipped with 2 easy-lift handles to conveniently help move the empty spa pool while the insulated cover and safety locks that keep the water warm when the spa is not in use
  • Includes a chemical floater and 2 filter cartridges to ensure the water stays clean with little maintenance work; Disclaimer: This spa cannot be used in temperatures less than 39 degrees Fahrenheit
7
Coleman SaluSpa Inflatable Hot Tub Spa | Portable Hot Tub with Heated Water System and 140 Bubble Jets | Fits Up to 4 People

Rating is 4.4 out of 5

Coleman SaluSpa Inflatable Hot Tub Spa | Portable Hot Tub with Heated Water System and 140 Bubble Jets | Fits Up to 4 People

  • ATTENTION: Shipping restrictions may apply. This model is not available for sale in the following states: CA, MA, ME, NJ, NV, NY, OR, RI. Residents of these states may select the comparable Bestway model sold with energy-efficient EnergySense thermal cover to avoid cancellation.
  • ENJOY THE ULTIMATE SPA EXPERIENCE: Nothing beats the feeling of sinking into a warm, bubbling hot tub after a long, hard day while jets project bubbles to massage your back, neck, and shoulders..Water Pump : 0.7A. Massage Tube Blower : 6.5A.Working Pressure : 1.2PSI (0.08Bar)
  • EASY TO OPERATE: The digital control panel lets you dictate the water temperature (up to 104 degrees Fahrenheit) and pressure of the jets. A power saving timer can even automate the temperature of the spa up to 72 hours prior to save energy and money.
  • DURABLE & INNOVATIVE CONSTRUCTION: The spa's durable PVC material and I-beam construction offer superior strength and stability while ensuring your hot tub never loses its shape.
  • SIMPLE SETUP & MAINTENANCE: No extra tools are needed to setup This portable spa. Simply inflate and deflate with the included pump. A cover comes with for an extra Safety feature, maintain the water's warm temperature, and prevent debris from getting in the tub.
  • BENEFITS OF A PORTABLE HOT TUB: With lift handles, the spa can be moved around with ease. This spa deflates compactly for optimal storage and transportation purposes.
8
RELXTIME 73in x 73in 4-6 Person Inflatable Hot Tub Spa, AirJet Outdoor Portable Hottub with 130 Bubble Jets, Filter Cartridges, Insulated Cover, Grey

Rating is 4.3 out of 5

RELXTIME 73in x 73in 4-6 Person Inflatable Hot Tub Spa, AirJet Outdoor Portable Hottub with 130 Bubble Jets, Filter Cartridges, Insulated Cover, Grey

  • RELAXING INFLATABLE SPA: Square 4 to 6-person spa has you relaxed in no time with a soothing massage system, rapid heating, and integrated water filtration. Using a touch digital control panel, easy to inflate & deflate
  • DURABLE & INNOVATIVE CONSTRUCTION: The spa's durable PVC material and beam construction offer superior strength and stability while ensuring your inflatable spa never loses its shape
  • ENERGY EFFICIENT SPA COVER: Inflatable cover provides extra insulation and minimizes heat loss; this cover will help protect your Hot Tub from rainwater pooling
  • FREEZE PROTECTION: Freeze protection automatic heating function prevents inner components from freezing, you can use your inflatable spa in colder temperatures
  • ACCESSORIES: 1 pool cover, 1 inflatable caover, 4 seat cushions, 2 filter cartridges & 2 covers, 20 strips water testing, 2 PVC patches, 1 spanner, 1 inflation hose, 1 air valve cap, 1x way valve, 1 x barometer, 1 drainage bung, 2 child safety key, 1 power cable, 1 storage bag, 1 instruction manual.


How to prevent saltwater corrosion in a hot tub?

Saltwater corrosion in a hot tub can be prevented by following these measures:

  1. Use corrosion-resistant materials: When purchasing a hot tub, opt for one that is specifically designed to withstand saltwater corrosion. Look for tubs that are made with corrosion-resistant materials such as stainless steel or titanium components.
  2. Monitor and maintain water chemistry: Properly balance the saltwater chemistry by regularly testing and adjusting the levels of chemicals such as pH, alkalinity, calcium hardness, and sanitizer. Maintaining proper water chemistry helps prevent the buildup of corrosive agents in the water.
  3. Regularly clean and rinse: Thoroughly clean the hot tub's surfaces, including all metal parts, to remove any accumulated salt residue. Use non-abrasive cleaners that are safe for use on the specific materials of your hot tub. Rinse the tub after cleaning to remove any leftover cleaning agents.
  4. Apply protective coatings: Apply a protective coating to metal surfaces in the hot tub. There are various anti-corrosion sprays or coatings available in the market that create a barrier between the metal and the saltwater, preventing direct contact and corrosion.
  5. Properly maintain and replace sacrificial anodes: Many hot tubs have sacrificial anodes, which are metal rods placed inside the tub to attract corrosion and prevent it from damaging other parts. Regularly check these anodes and replace them when they show significant signs of corrosion. Following the manufacturer's instructions for anode maintenance is crucial.
  6. Regular maintenance and inspections: Perform routine maintenance on your hot tub, which involves inspecting all parts, such as jets, fixtures, control panels, and pumps. Promptly replace any corroded components, gaskets, or seals to prevent further corrosion.
  7. Control environmental factors: Protect the hot tub from environmental elements that may accelerate corrosion. Shield the tub from direct exposure to saltwater spray or rain by using covers or enclosures. If located near a saltwater pool or the ocean, consider installing barriers like windbreakers or fencing to minimize the exposure to salt-laden air or water.
  8. Regularly drain and clean the hot tub: Draining and cleaning the hot tub on a regular basis helps remove any accumulated salt or corrosive agents. Following the manufacturer's instructions, fully drain the hot tub, clean the surfaces, and refill it with properly balanced saltwater or freshwater.


By following these preventive measures, you can significantly reduce saltwater corrosion in your hot tub and prolong its lifespan.


What are the maintenance steps for the saltwater generator?

  1. Regularly check the salt levels in the pool water to ensure it is within the appropriate range. This can be done using a salt test kit or a salt test strip.
  2. Inspect the cell regularly for any signs of scaling or deposits. Scaling occurs when there is a buildup of minerals on the cell plates. If scaling is present, clean the cell according to the manufacturer's instructions.
  3. Check the cell's power supply and make sure it is functioning properly. Look for any loose connections, frayed wires, or damaged parts. If any issues are found, contact a professional for repairs.
  4. Monitor the chlorine production of the saltwater generator. It should be consistently producing the desired chlorine levels. If the chlorine levels are low, high, or inconsistent, troubleshoot the generator or contact a professional for assistance.
  5. Inspect the salt cell for any damage or deterioration. If there are signs of degradation, it may need to be replaced.
  6. Clean the salt cell regularly to remove any accumulated debris or buildup. This can be done using a high-pressure hose or a specific cell cleaning solution recommended by the manufacturer.
  7. Check and clean the flow switch or sensor if your saltwater generator is equipped with one. The flow switch ensures that water is flowing properly through the cell for chlorine production.
  8. Regularly clean or backwash the pool filter to maintain optimal water flow and ensure the efficiency of the saltwater generator.
  9. Follow the manufacturer's recommendations for winterizing the saltwater generator if you live in a region with freezing temperatures.
  10. Keep the salt cell and generator unit protected from extreme weather conditions, such as excessive heat or cold, to prevent damage.


It is always important to refer to the specific maintenance guidelines provided by the manufacturer of your saltwater generator, as the steps may vary depending on the make and model.


How long does it take to convert a hot tub to saltwater?

The process of converting a hot tub to a saltwater system typically takes several hours or up to a full day, depending on the specific circumstances. Here is a general overview of the steps involved in converting a hot tub to saltwater:

  1. Drain the existing water: Start by completely emptying the hot tub of its existing water. This step can take anywhere from 15 minutes to an hour, depending on the size of the tub and the efficiency of the drainage system.
  2. Clean and prepare the hot tub: Thoroughly clean the hot tub shell and other components to remove any debris or residue. This step can take another 30 minutes to an hour, depending on the condition of the tub.
  3. Installation of a saltwater system: Purchase and install a saltwater chlorination system designed for hot tubs. This involves following the manufacturer's instructions for plumbing and electrical connections. The installation process typically takes a couple of hours.
  4. Adjusting the water chemistry: Once the saltwater system is installed, you will need to add the appropriate amount of salt to the water according to the manufacturer's recommendations. This usually involves waiting for the salt to dissolve, which can take up to a few hours.
  5. Balancing water parameters: After adding salt, you may need to adjust the pH, alkalinity, and calcium hardness levels of the water. This step can take additional time, as you may need to test the water and make several adjustments to achieve the desired balance.
  6. Initial startup and system calibration: Once the water chemistry is balanced, you will need to configure the settings on the saltwater system and run it for a few cycles to ensure everything is functioning correctly. This process usually takes another hour or so.


Overall, the entire process of converting a hot tub to saltwater can range from 4-8 hours, depending on various factors such as the size of the hot tub, complexity of installation, and subsequent water chemistry adjustments.


How to properly balance other chemicals in a saltwater hot tub?

Balancing the chemicals in a saltwater hot tub is crucial to ensure the water is safe, clean, and properly sanitized. Here's a step-by-step guide to help you achieve the right chemical balance:

  1. Test the Water: Use a water testing kit designed specifically for saltwater hot tubs. This kit will measure various chemical levels such as pH, total alkalinity, calcium hardness, and sanitizer levels.
  2. Adjust Total Alkalinity: Total alkalinity helps stabilize the pH levels in the water. If the total alkalinity is too low (below 80 ppm), add an alkalinity increaser. If it's too high (above 120 ppm), use a pH decreaser or alkalinity reducer.
  3. Set pH Levels: The optimal pH for a saltwater hot tub is between 7.4 and 7.6. Add pH increaser (soda ash) to raise the pH if it's too low, or pH decreaser (sodium bisulfate) to lower it if it's too high.
  4. Address Calcium Hardness: The ideal range for calcium hardness in a saltwater hot tub is 150-250 ppm. Use a calcium increaser if it's too low or a product specifically designed to reduce calcium hardness if it's too high.
  5. Sanitize the Water: Saltwater hot tubs use a chlorine generator or salt cell to create chlorine from the salt present in the water. The chlorine generator's output should be set according to the manufacturer's instructions to maintain a safe and effective level of sanitizer. Additionally, periodically check the chlorine and bromine levels to ensure they are within the recommended range.
  6. Shock Treatment: Regularly shock the water to oxidize any organic compounds and contaminants that may accumulate over time. Follow the recommended dosage on the shock treatment product and allow the tub to circulate before using it again.
  7. Regular Maintenance: Regularly monitor the chemical levels in the water using a water testing kit, and adjust as necessary. Keep the water clean by regularly removing debris, cleaning the filter, and ensuring proper circulation.
  8. Follow Manufacturer's Instructions: Always refer to the manufacturer's instructions for your specific saltwater hot tub model. They may have specific recommendations or guidelines for chemical balance.


Remember, maintaining proper chemical balance in a saltwater hot tub is an ongoing process. Regular monitoring, testing, and adjustments are necessary to keep the water safe, clean, and enjoyable.


How often should I test the salt levels in a saltwater hot tub?

It is recommended to test the salt levels in a saltwater hot tub at least once a week or after any significant water changes. However, it may vary depending on the specific manufacturer's recommendations or the usage frequency of the hot tub. It is advisable to refer to the instruction manual or consult with the manufacturer for the recommended testing frequency for your particular hot tub model.

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