Salt water pools have become the default choice for many Florida homeowners, and for good reason. They are gentler on skin and eyes, easier to maintain, and avoid the hassle of buying and storing liquid chlorine or tablets. Here is a clear explanation of how salt systems work, what they cost, and why they are such a strong fit for our Central Florida climate.
How a Salt System Actually Works
A salt water pool is still a chlorine pool. The difference is where the chlorine comes from. Instead of adding chlorine manually, you add pool-grade salt (sodium chloride) to the water, and a device called a salt chlorine generator (SCG) – also known as a salt cell – converts that salt into chlorine on demand.
The process is called electrolysis:
- Pool water passes through the salt cell as the pump runs.
- An electrical current passes between titanium plates coated with ruthenium or iridium.
- The current splits the dissolved salt (NaCl) into sodium and chlorine.
- The chlorine immediately sanitizes the water, then recombines back into salt.
The salt is reused continuously. You only add more when it is diluted by rain, splash-out, or backwashing.
Why Florida Homeowners Choose Salt
- Softer water feel: Salt pools run at roughly 3,000-3,500 ppm salt – about one-tenth the salinity of seawater and similar to a contact lens solution. Skin and eyes feel noticeably better.
- No more hauling chlorine: No jugs of liquid chlorine or buckets of tabs cluttering the garage in the Florida heat.
- Steadier sanitation: Chlorine is produced continuously while the pump runs, so levels stay more stable in our hot, sunny climate.
- Lower chemical cost: Salt is inexpensive and lasts for months. Typical chemical spend drops $40-$80 per month for most residential pools.
- Less odor and irritation: Lower combined chlorine (chloramines) means less of that “chlorine smell” and red eyes.
What a Salt System Includes
- Salt cell: The cartridge where electrolysis happens. Lifespan is typically 5-7 years in Florida.
- Control box: Manages output percentage, flow detection, salt level reading, and diagnostics.
- Flow switch and temperature sensor: Prevents the cell from firing without water flow and adjusts for temperature.
- Bonding: Like all pool equipment, the cell must be properly bonded.
Popular options include Pentair IntelliChlor, Hayward AquaRite and TurboCell, Jandy TruClear, and CircuPool. All integrate with modern automation systems.
Day-to-Day Operation
- Run time: The pump and cell need enough daily runtime to produce the chlorine your pool consumes. In Florida summer, that is usually 8-12 hours.
- Output setting: Start around 50% and adjust based on a weekly chlorine test.
- Salt level: Keep salt in the manufacturer’s target range (typically 2,700-3,400 ppm).
- Stabilizer (CYA): Critical in Florida sun. Maintain 60-80 ppm to protect chlorine from UV.
- pH: Salt cells tend to raise pH slightly. Plan to add muriatic acid occasionally.
Maintenance
- Inspect the cell every 3 months. Look for scale (white calcium buildup) on the plates.
- Clean only when needed. Modern cells with reverse-polarity often self-clean. If scale is heavy, soak in a diluted muriatic acid solution per the manufacturer’s instructions.
- Watch the diagnostic lights. Low salt, low flow, and cell life warnings should be addressed promptly.
- Test water weekly. Free chlorine, pH, alkalinity, CYA, and salt.
Typical Costs in Florida
- New installation on an existing pool: $1,800-$2,800 installed for a quality residential system.
- Replacement salt cell: $700-$1,400 depending on brand and size.
- Salt: Around $7-$10 per 40 lb bag. Initial fill is 6-12 bags depending on pool size; top-offs are minimal.
- Operating cost: Roughly $25-$45 per month for chemicals and electricity related to sanitation.
Common Myths
- “It’s not chlorine.” It is chlorine – just generated on site from salt.
- “It will rust my equipment.” Properly bonded, modern pool equipment is designed for salt. Issues usually trace back to bonding problems or unrelated metal fixtures.
- “It tastes salty.” At 3,000 ppm, most people cannot taste the salt at all.
- “It’s maintenance-free.” Still needs weekly testing and seasonal cell care – just less than a tab pool.
Is Salt Right for Your Pool?
Salt is a great fit for almost every Florida residential pool – fiberglass, vinyl liner, and most plaster/quartz finishes. A few situations warrant a closer look:
- Pools with natural stone coping that is not properly sealed.
- Pools with older galvanized or untreated metal fixtures near the waterline.
- Screen enclosures with unfinished aluminum at risk of long-term salt exposure – though spray-back from a 3,000 ppm pool is minimal.
For new construction, we plan for salt from day one – correct bonding, sealed stone, and an automation-ready control panel. For existing pools, we evaluate the equipment pad, electrical, and any sensitive materials before recommending a conversion.
Thinking about converting to salt or replacing an aging cell? Contact Pools-Now for a free in-home evaluation or call 321-345-9115.