Pool Chemistry: The Numbers That Actually Matter
Pool chemistry is not complicated, but it is interconnected. Touch one number and three others move. The most common reason pools go green between visits isn't a missed shock — it's that one reading drifted out of range, dragged the next one with it, and by the time anyone looked at the water it was too late.
I tell every new tech who joins the company the same thing: don't memorize the numbers, understand the relationships. Chlorine doesn't work without pH in range. Salt cells don't work without stabilizer in range. Cloudy water is almost never about chlorine — it's about calcium or filtration. Once you see the system, the readings tell you a story.
This pillar covers every chemistry topic in our library, in the order a Florida pool owner will actually run into them.
In this guide
- Article 1 · Water Chemistry · 10 min
Pool Chemistry Basics: What Every South Florida Homeowner Should Know
The 7 measurements that actually matter, what the right ranges are, and how South Florida's climate shifts them — explained without jargon.
Read article → - Article 2 · Water Chemistry · 10 min
Cyanuric Acid (Pool Stabilizer) in South Florida: The CYA Problem Nobody Talks About
CYA is essential for South Florida pools — but when it creeps past 80 ppm, chlorine stops working. Here's the chemistry, why trichlor pucks cause it, and what to do before it requires a drain.
Read article → - Article 3 · Water Chemistry · 10 min
Calcium Hardness in South Florida Pools: The Scale and Etch Problem
South Florida tap water already runs hard. Add calcium hypochlorite and splash-out replacement and CH climbs fast. Here's what too much and too little actually do — and how to manage it.
Read article → - Article 4 · Water Chemistry · 9 min
How to Shock a Pool in South Florida: Types, Dosing, and When to Do It
Not all shock is the same, and South Florida's CYA levels change the math. Here's the protocol a second-generation pool cleaner follows — which product, when, how much, and the mistakes that cost money.
Read article → - Article 5 · Maintenance · 9 min
Pool Tile Cleaning and Calcium Scale: What Weekly Brushing Does (and When It's Not Enough)
The white ring at the waterline is a chemistry problem, not a cleaning problem. Here's why calcium scale forms faster in South Florida, what weekly brushing actually prevents, and what to do when brushing isn't enough.
Read article → - Article 6 · Water Chemistry · 5 min
How to Lower pH in a Pool (Safely, for South Florida Water)
High pH makes chlorine almost useless. Here's the safe, step-by-step way to lower pool pH in South Florida water — and why it keeps drifting up.
Read article → - Article 7 · Water Chemistry · 5 min
How to Raise Pool Alkalinity (And Why It Matters More Than pH)
Low alkalinity is why your pH keeps swinging. Fix alkalinity first and everything else stabilizes. Step-by-step with the right dose math.
Read article → - Article 8 · Maintenance · 5 min
How Much Salt to Add to Your Pool (Dosing Math for South Florida)
Undersalt and your salt cell burns out. Oversalt and you corrode equipment. Here's the exact formula and how to dose safely.
Read article → - Article 9 · Water Chemistry · 7 min
Phosphates in South Florida Pool Water: Why Your Pool Keeps Greening
Phosphate levels in South Florida municipal and well water are unusually high. Here's what that means for your pool and how to control it.
Read article → - Article 10 · Problem Solving · 6 min
Cloudy Pool Water: 7 Causes and How to Fix Each One
Cloudy water isn't algae yet — but it's the warning sign. Here are the seven real causes of cloudy pool water and how to diagnose yours.
Read article → - Article 11 · Maintenance · 9 min
The South Florida Saltwater Pool Maintenance Guide
Salt cell care, salinity management, and scale prevention — everything you need to keep a saltwater pool running right in South Florida.
Read article →
Stop guessing. Get a real pool company on it.
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