Notes from the deep end

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

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4 articles

Water Chemistry · Archive date: · 3 min read

What Causes High Phosphate Levels in a Pool?

High phosphate levels in a pool usually come from leaves, dirt, fertilizer runoff, pollen, and top-off water. The key is finding the source and reducing it safely.

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 Feels Irritating After a Storm or Pollen Surge

Storm runoff and pollen can strain pool water, dilute chlorine, and upset pH. Learn what to check first, what not to do, and 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 Interpret ORP, Chlorine, and Electronic Readings for Pool Care

ORP and other electronic readings are best used as trend indicators. Learn how to compare them with chlorine, pH, and water conditions safely.

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 to Check When Pool Chlorine Changes Overnight

If chlorine changes by morning, confirm the test, review bather load, rain, circulation, and equipment, then get help before overcorrecting.

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