Notes from the deep end

Practical articles for pool owners on skimming, water testing and choosing the right equipment.

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11 articles

Water Chemistry · Archive date: · 3 min read

Is a Saltwater Pool Better Than a Chlorine Pool?

Saltwater pools still sanitize with chlorine, but they make it on site. The better choice depends on maintenance habits, equipment, and comfort.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

What Makes Pool pH Bounce Up and Down So Often?

Pool pH swings usually come from aeration, fill water, rain, sanitizer type, or low total alkalinity. Find the cause, avoid overcorrecting, and know when to call a pro.

Written for PoolSkimmer on Oct 7, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Add Chlorine to a Pool Safely

Test the water first, then add chlorine according to the label and your equipment manual. Keep the pump running, avoid mixing chemicals, and recheck the water.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Raise Pool Alkalinity Without Affecting pH

Low alkalinity often comes from acid additions, rain, splash-out, or refill water. Raise it gradually, retest after circulation, and call a pool pro if readings stay unstable.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

Is Pool Shock the Same as Chlorine?

Pool shock and chlorine are related, but they are not always the same thing. Chlorine is the routine sanitizer; shock is a stronger treatment used sometimes.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Choose a Pool Test Kit for Accurate Pool Readings

Choose a pool test kit based on the readings you need, the accuracy you can maintain, and how consistently you’ll use it. Reliable results matter more than extras.

Written for PoolSkimmer on Oct 7, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

What Does It Mean to Shock a Pool?

Shocking a pool means giving the water a temporary boost in sanitizer or oxidizer to break down contaminants, help clear odors, and support normal pool care.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Increase Cyanuric Acid in a Pool Safely

To raise cyanuric acid, use a pool stabilizer made for swimming pools, follow the label exactly, circulate the water, and retest before adding more.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How Long After Pool Shock Can You Swim?

There’s no universal wait time after shocking a pool. Swim only when the shock has circulated, the water is clear, and test results match the product label’s safe range.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

What Is Pool Shock Made Of?

Pool shock is usually chlorine-based or non-chlorine. The exact active ingredient depends on the product label, so read it before you add anything to pool water.

Written for PoolSkimmer on Oct 23, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

When Should You Retest Pool Water After Making a Correction?

Retest pool water only after it has fully circulated and the correction has had time to work. Timing depends on the change, the pump, and water clarity.

Written for PoolSkimmer on Oct 7, 2026; assigned an earlier archive date, not published on that date.