Notes from the deep end

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

Clear filters

4 articles

Filtration & Circulation · Archive date: · 3 min read

When Should You Clean or Replace a Pool Filter Cartridge?

A pool filter cartridge should be cleaned when pressure rises or flow drops, and replaced when damage, stretching, or poor filtration persists.

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

Filtration & Circulation · Archive date: · 3 min read

Why a Pool Pump Loses Prime Overnight

A pool pump that loses prime overnight usually has low water, an air leak, a blocked basket, or a faulty check valve that lets water drain back.

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

Filtration & Circulation · Archive date: · 3 min read

How to Improve Pool Circulation in a Dead Spot

Find and fix the causes of stagnant water in a pool dead spot by clearing blockages, adjusting return jets, and balancing flow safely.

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

Filtration & Circulation · Archive date: · 3 min read

How to Drain a Pool Using the Pool Pump Safely

You can drain a swimming pool with the pump only if your system has a waste or drain setting and you can keep the pump from running dry.

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