Notes from the deep end

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

Clear filters

77 articles

Filtration & Circulation · Archive date: · 3 min read

What Kind of Sand Goes in a Pool Filter?

Use only the pool filter sand your manufacturer specifies—usually clean, graded silica sand. Don’t use play sand or beach sand, and switch media only with the pump off.

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

Filtration & Circulation · Archive date: · 3 min read

What should the pool filter pressure gauge read?

The right pool filter pressure is your system’s clean baseline, not one universal psi number. A rise of about 8–10 psi often means it’s time to inspect the filter.

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

Filtration & Circulation · Archive date: · 3 min read

How Often Do You Change an Above Ground Pool Filter Cartridge?

Most above ground pool filter cartridges are not replaced on a fixed calendar. Clean them regularly, then replace the cartridge when cleaning no longer restores flow or damage appears.

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

Filtration & Circulation · Archive date: · 3 min read

Where to Buy Pool Filter Sand

Buy pool filter sand from pool supply stores, pool equipment dealers, home centers, or trusted online sellers—but confirm the sand filter type in your manual first.

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

Filtration & Circulation · Archive date: · 4 min read

How to Pressure Test Pool Lines Safely

A pool pressure test helps you check whether a return or suction line is leaking. Shut the pump off, isolate the pipe, and use the kit instructions; call a pro if the plumbing layout is unclear.

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

Filtration & Circulation · Archive date: · 3 min read

How Often Should You Replace a Pool Cartridge Filter?

A pool cartridge filter usually needs cleaning more often than replacement. Replace it only when it’s damaged, collapsed, or still performs poorly after proper cleaning.

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

Filtration & Circulation · Archive date: · 3 min read

What Kind of Sand Do You Put in a Pool Filter?

Use pool filter sand matched to your filter’s manual, not play sand or beach sand. The right grade and amount depend on the filter tank and model.

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

Filtration & Circulation · Archive date: · 3 min read

Why Is My Pool Pump Making Loud Noise When Running?

A loud pool pump usually points to restricted water flow, air in the system, loose parts, or worn bearings. Start with safe checks before calling for repair.

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

Filtration & Circulation · Archive date: · 3 min read

What Size Sand Filter for My Pool?

Choose a sand filter by matching it to your pool volume, pump flow rate, and system rating. A slightly larger filter is often easier to maintain than an undersized one.

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

Filtration & Circulation · Archive date: · 3 min read

What to Do with Old Pool Filter Sand

Old pool filter sand is usually removed, dried, and disposed of according to local rules. In limited cases, clean used sand can be reused outside the pool.

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

Filtration & Circulation · Archive date: · 3 min read

Why am I getting sand in my pool from my filter?

Sand returning to a pool usually means a sand filter is letting media escape through a broken internal part, a valve issue, or a backwashing mistake.

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

Filtration & Circulation · Archive date: · 3 min read

How to Clean Pool Tile with a Pressure Washer Safely

A pressure washer can clean pool tile, but only if the tile and grout are sound. Use the gentlest setting, avoid seams, and stop if calcium or damage needs professional help.

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