Thinking about switching to a saltwater pool? You’re not the only one. Many homeowners are choosing them over traditional chlorine pools, hoping for a swimming experience that’s gentler on the skin and easier to maintain.
But there’s a common misconception—saltwater pools aren’t completely chlorine-free. Instead, they generate their own chlorine using salt, creating a system that requires less manual upkeep.
So, how do saltwater pools work exactly? What makes them different from standard chlorine pools? And are there any downsides to consider?
How Do Saltwater Pools Work?
At first glance, saltwater pools might seem completely different from traditional chlorine pools. But in reality, they both use chlorine to keep the water clean. The difference is in how the chlorine is introduced into the water.
A saltwater pool has a special system that generates chlorine from salt instead of requiring chlorine tablets or liquid. This process is called saltwater chlorination and happens inside a piece of equipment known as a salt chlorine generator.
Here’s how it works:
1. Dissolving Salt in the Water
The pool water contains dissolved salt, usually around 2,500 to 3,500 parts per million (ppm)—a much lower concentration than ocean water. This means swimming in a saltwater pool won’t feel like being in the sea.
2. Chlorine Generation Process
As water moves through the pool’s circulation system, it passes through a component called a salt cell, which is part of the salt chlorine generator. This cell uses a low electrical charge to break down salt (sodium chloride) into chlorine.
3. Continuous Chlorination
The chlorine produced through this process helps disinfect the pool water, killing bacteria and algae. Since the system continuously generates chlorine, there’s no need to manually add chemicals as often as with a traditional pool.
4. Filtration and Circulation
Like any other pool, a saltwater pool relies on its pump and filter system to keep the water moving and remove debris. While the generator produces chlorine, the filter ensures that dirt and other contaminants don’t accumulate.
Think of the salt chlorine generator like a coffee machine. You add salt instead of coffee grounds, and instead of brewing a cup, it transforms salt into chlorine—without needing daily attention.
Benefits of Saltwater Pools
Switching to a saltwater pool comes with several advantages, especially for those looking for a more comfortable and low-maintenance swimming experience. While these pools still require upkeep, they offer a few benefits that make them stand out.
1. Gentler on Skin and Eyes
One of the biggest appeals of a saltwater pool is the way it feels. The water is softer compared to traditional chlorine pools, and it doesn’t cause the same level of irritation to the skin and eyes. This is because the chlorine produced by the salt chlorine generator is milder than manually added chlorine, making swimming more comfortable—especially for those with sensitive skin.
2. Less Chemical Odor
Traditional pools are known for their strong chlorine smell, especially when the water isn’t perfectly balanced. Saltwater pools produce chlorine in a more controlled way, which reduces harsh chemical odors. That means you won’t be hit with a strong chlorine scent every time you take a dip.
3. Lower Day-to-Day Maintenance
While saltwater pools still require monitoring, they don’t need as much hands-on maintenance as standard pools. Since the salt chlorine generator continuously produces chlorine, there’s no need to add chemicals as frequently. This also means fewer chemical adjustments, making upkeep easier for pool owners.
4. More Cost-Efficient Over Time
Although the upfront cost of installing a saltwater pool is higher, many pool owners find that it saves money in the long run. Traditional pools require frequent chlorine purchases, while saltwater pools generate their own chlorine using salt. Over time, this can lead to cost savings on chemical expenses.
5. Softer Water for a More Enjoyable Swim
The salt content in a saltwater pool is much lower than in ocean water, but it’s still enough to create a silkier, smoother feel. Many swimmers prefer this sensation over traditional pool water, which can sometimes feel harsh due to chemical additives.
6. Fewer Chemical Fluctuations
Traditional pools often require constant monitoring and adjustments to keep chlorine levels stable. With a saltwater pool, chlorine production is continuous, helping to maintain a more consistent balance. This can result in fewer algae blooms and reduced risk of cloudy water.
7. Less Pool Equipment Wear and Tear
Because saltwater pools don’t require frequent manual chlorine additions, pool equipment and surfaces tend to experience less chemical damage. Harsh chlorine can accelerate the wear of liners, ladders, and other pool components, whereas the gentler chlorine in saltwater pools can help preserve them for a longer lifespan.
Disadvantages of Saltwater Pools
While saltwater pools offer several benefits, they also come with some drawbacks. Understanding these challenges can help homeowners make an informed decision before making the switch.
1. Higher Initial Cost
One of the biggest downsides of a saltwater pool is the upfront expense. Installing a salt chlorine generator and the necessary equipment can cost significantly more than setting up a traditional chlorine pool. While it may save money on chemical purchases over time, the initial investment can be a barrier for some homeowners.
2. Potential Corrosion Issues
Salt can be tough on metal surfaces. Over time, it can cause corrosion in pool ladders, railings, heaters, and even certain types of pool finishes. If a saltwater pool isn’t properly maintained, it may lead to repairs or replacements of metal components.
3. More Complex Repairs and Maintenance
Although saltwater pools require less day-to-day maintenance, they can be more complicated to repair when something goes wrong. The salt chlorine generator and its components can develop issues that require professional servicing.
Unlike traditional pools, where adding chlorine manually is straightforward, fixing a salt chlorine generator or dealing with a malfunctioning control panel often requires specialized knowledge.
4. Higher Energy Consumption
The process of generating chlorine from salt requires a steady power supply, which can lead to higher electricity bills. The salt chlorine generator needs to run consistently to maintain proper chlorine levels, meaning energy costs may be higher compared to a traditional pool that only needs occasional chemical additions.
5. Maintaining Proper Water Chemistry Can Be Tricky
While saltwater pools produce their own chlorine, they still need regular testing to ensure proper chemical balance. The salt-to-chlorine conversion process tends to raise pH levels, meaning pool owners often need to add acid to maintain the correct balance. Neglecting pH adjustments can lead to scaling on pool surfaces and damage to the salt cell.
How to Maintain a Saltwater Pool
Although saltwater pools require less hands-on maintenance compared to traditional chlorine pools, they still need regular care to keep the water clean and the equipment running efficiently. Proper maintenance helps prevent issues like algae growth, scaling, and equipment failure.
Here are the steps to keep a saltwater pool in top shape.
1. Monitor Salt Levels Regularly
The salt concentration in a saltwater pool should typically stay between 2,500 to 3,500 ppm (parts per million). If the salt level is too low, the salt chlorine generator won’t be able to produce enough chlorine. If it’s too high, it can lead to scaling and potential damage to pool surfaces. Testing the water every couple of weeks ensures the salt level remains within the ideal range.
2. Clean the Salt Cell
The salt cell inside the salt chlorine generator can develop calcium buildup over time, reducing its efficiency. Most manufacturers recommend inspecting and cleaning the salt cell every 3 to 6 months. If there’s visible scaling, soaking the cell in a mild acid solution can help remove deposits and restore performance.
3. Check and Balance pH Levels
Unlike traditional pools, saltwater pools tend to have higher pH levels, which can lead to scaling on pool surfaces and cloudy water. Regularly testing and adjusting pH with muriatic acid or sodium bisulfate helps maintain the recommended level of 7.2 to 7.6.
4. Keep an Eye on Chlorine Levels
Even though saltwater pools generate chlorine automatically, external factors like heavy rain, high temperatures, and increased pool usage can impact chlorine levels. Regular testing ensures there’s enough chlorine to keep the water sanitized. If chlorine levels drop too low, shocking the pool may be necessary to restore proper sanitation.
5. Inspect and Maintain Pool Equipment
The salt chlorine generator, pump, and filter system all play essential roles in keeping the water clean. Checking for leaks, blockages, and signs of wear can help prevent unexpected breakdowns. It’s also a good idea to backwash or clean the pool filter periodically to remove debris buildup.
6. Watch for Signs of Corrosion
Using corrosion-resistant materials and applying a protective sealant to metal parts can help reduce damage. If corrosion starts appearing, replacing affected parts with stainless steel or coated materials may be necessary.
7. Test for Stabilizer (Cyanuric Acid) Levels
Cyanuric acid (CYA) helps protect chlorine from being broken down by sunlight. In saltwater pools, stabilizer levels should be kept between 50 and 80 ppm to maintain proper chlorine effectiveness. If CYA levels drop too low, chlorine will dissipate too quickly, requiring the salt chlorine generator to work harder.
When to Call a Professional
While many maintenance tasks can be handled by pool owners, some issues—such as persistent chlorine imbalances, salt system malfunctions, or extensive scaling—may require professional assistance.
Signs You Need to Call a Professional for Your Saltwater Pool
- Salt Chlorine Generator Isn’t Producing Enough Chlorine – If chlorine levels remain low despite proper salt levels, the salt chlorine generator may not be functioning correctly. This could be due to a failing salt cell, clogged plates, or a system malfunction.
- Persistent Cloudy or Green Water – A saltwater pool should stay clear with regular filtration and proper chlorine production. If the water becomes cloudy or turns green despite balancing chemicals, it could indicate a circulation issue, an overwhelmed filtration system, or a failing salt cell.
- Scaling or White Buildup on Pool Surfaces and Equipment – Excessive scaling on pool walls, ladders, and inside the salt cell suggests that the water’s pH or calcium levels are too high. While minor buildup can be removed with cleaning, persistent scaling can clog the salt chlorine generator and reduce its efficiency.
- Corrosion on Metal Components – If rust spots appear, or if metal components start degrading faster than expected, a professional can assess the damage and suggest corrosion-resistant materials or protective coatings to minimize future issues.
- Strange Noises from the Pump or Filtration System – Unusual sounds, such as grinding, humming, or loud vibrations, could indicate a failing pump motor, clogged pipes, or air leaks in the system. These problems can reduce circulation and make it harder for the salt chlorine generator to maintain chlorine levels.
Install Saltwater Pools with the Right Partner
Understanding how saltwater pools work helps homeowners decide if they’re the right fit. These pools use a salt chlorine generator to produce chlorine from salt, providing a more automated and low-maintenance approach to pool sanitation. However, they also come with challenges, such as higher upfront costs, potential corrosion, and more complex repairs.
While these pools require less frequent chemical adjustments, they still need ongoing care to prevent scaling, equipment failure, and chlorine imbalances.
At All Miami Pools, we specialize in saltwater pool installation, maintenance, and repairs for residential and commercial clients. Whether you’re considering switching to a saltwater pool or need expert care for your existing system, our team is here to help.
Contact us today to learn more about our services.