Chemistry

All chemistry guides

Every parameter and topic — testing, balance, sanitize, stabilizer, and systems. Newest first.

Pool water context for phosphates intro

Stabilizer & systems

Phosphates

Intro only — not a magic algae bullet.

Pool test strip held up to light for reading

Test strip accuracy

Strips vs drop kits — when each is enough.

Calcium chloride and chlorine side by side

Calcium vs chlorine

Two different jobs — not substitutes.

Sunny pool water (CYA protects chlorine)

Stabilizer & systems

Cyanuric acid

Stabilizer — too low burns off; too high stalls.

Clear water for salt system basics

Stabilizer & systems

Saltwater basics

SWG still needs free chlorine in the water.

Pool water surface for calcium hardness

Calcium hardness

Soft water eats surfaces; hard water scales.

pH

Comfort, chlorine efficiency, and metal risk.

Water testing for alkalinity

Total alkalinity

The buffer that fights pH bounce.

Clear pool water for free chlorine residual

Sanitize & shock

Free chlorine

Your day-to-day sanitizer residual.

Pool shock and chlorine products

Sanitize & shock

Pool shock

Spike sanitizer the right way — not random dumping.

Pool water test strips over clear water

Start hereStart

How to test

What to measure and in what order.

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