Notes from the deep end

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

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18 articles

Water Chemistry · Archive date: · 3 min read

Can I Use Bleach Instead of Chlorine in My Pool?

Household bleach can sometimes chlorinate a pool, but only if the label and pool manual allow it. Unscented sodium hypochlorite is the key ingredient to check.

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 Lower Chlorine in a Pool Safely

To lower chlorine in your pool, stop adding sanitizer, keep the water circulating, retest the free chlorine, and let time, sunlight, or dilution do the rest.

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 Tell Whether Your Pool Water Is Scale-Prone

Scale-prone pool water often shows rising pH, hard water, white crust, rough surfaces, and cloudy deposits before visible scale buildup starts.

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 Maintain pH in a Pool

Maintain pool pH by testing regularly, keeping the water circulating, and making careful, label-directed adjustments before small changes become bigger water problems.

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 Chlorine in a Pool Safely

To raise free chlorine in a pool, test first, restore circulation, remove debris, and then add chlorine exactly as the product label and equipment manual direct.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How Much Soda Ash to Raise pH in a Pool?

The right amount of soda ash depends on your pool volume and current pH. Test first, follow the label, circulate the water, and retest before adding more.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Shock a Saltwater Pool Safely

To shock a saltwater pool, first clean and test the water, then use only the shock product’s label directions, keep circulation running, and stay out until it is safe.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

Why Pool Water Can Look Crystal Clear but Still Test Out of Balance

Pool water can look crystal clear and still be unsafe if sanitizer, pH, alkalinity, or calcium hardness drift out of range. Here’s what to check first.

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 Lower pH in a Swimming Pool Safely

To lower pH in a swimming pool, confirm the reading first, then use a pH reducer only as the label directs. In salt water pools, check circulation and equipment if pH keeps rising.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Fix Alkalinity in a Pool

To fix alkalinity in a pool, first verify the reading, then determine whether total alkalinity is too low or too high before making any water-care changes.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

How to Add Calcium to a Pool Safely

To raise pool calcium hardness, use a calcium chloride product only after testing, then follow the label and your pool manual while the pump circulates water.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.

Water Chemistry · Archive date: · 3 min read

What Chemicals Do You Need for an Above Ground Pool?

Most above ground pools need chlorine or another sanitizer, pH and alkalinity balancers, and an occasional shock treatment. Test first and follow the label.

Written for PoolSkimmer on Oct 24, 2026; assigned an earlier archive date, not published on that date.