Salt Water Pool Maintenance Guide
Keep salt in your chlorinator's target range (commonly ~3200 ppm), test free chlorine the same as any pool, and inspect the salt cell for scale every 1-3 months.
Safety first
- Never mix chemicals together.
- Always add the chemical to the water — never water to the chemical.
- Wear gloves and eye protection when handling pool/spa chemicals.
- Keep chemicals out of reach of children and pets.
- Always follow the product label — it overrides any guidance here.
What's different about a salt pool
A salt chlorinator converts dissolved salt into chlorine using electrolysis, so you don't manually add chlorine as often. But it's still a chlorine pool — FC, pH, TA, CYA, and CH all still matter and need regular testing.
Regular maintenance tasks
- Salt level: test monthly and keep it in your chlorinator's target range using the Salt Calculator — most units want 2700-3400 ppm.
- Free chlorine: test 2-3 times a week, same as a traditional pool, and adjust the cell's output if FC runs low or high.
- pH: salt cells tend to push pH up over time — check it weekly with the pH Calculator.
- CYA: salt pools typically run 60-80 ppm; re-check if you've used dichlor/trichlor as a backup.
- Salt cell: inspect every 1-3 months for scale buildup and clean per the manufacturer's instructions.
Frequently asked questions
Does a salt pool still need chlorine testing?
Yes. The salt cell generates chlorine from the salt — you still test and target FC the same way as a traditional pool.
Why is my salt level dropping over time?
Backwashing, splash-out, and rain dilute the water. Topping off with fresh water or heavy rain are the most common causes.
How often should I clean the salt cell?
Check it every 1-3 months for scale buildup; clean with a mild acid solution per the manufacturer's instructions when you see visible calcium deposits.
Can I use trichlor or dichlor as a backup in a salt pool?
Occasionally, but both add CYA every time — and salt pools already run lower CYA targets (§5.7), so repeated use can push CYA too high.