Every pool test logged and checked for the inspector

Every pool test logged and checked for the inspector. A commercial pool & spa chemistry log for Excel and Google Sheets: up to 8 pools with your code's limits, 3,000 test rows checked as you type, a monthly inspector report, a dosing calculator, plus printable log sheets.

• Settings: Facility, operator and up to 8 pools/spas, each with its own code limits (sanitizer, pH, combined chlorine, CYA, alkalinity, temperature) and tests required per day
• Log: 3,000 test rows: free/total chlorine or bromine, combined chlorine worked out, pH, alkalinity, CYA, temperature, drain visible, flow, filter psi, chemicals, initials; every reading checked as you type
• Monthly report: Per pool: readings, days logged, days short of required tests, out-of-range readings, percent in range, averages, plus the list of out-of-range readings; print-ready with a signature line
• Day grid: Tests per day per pool for the month; short days in red
• Dosing: Chlorine product needed to raise free chlorine by the ppm you need (liquid, cal-hypo, dichlor, trichlor)
• Printable log sheets: Daily log, pool + spa daily log, weekly checks, monthly summary and closure log (US Letter + A4)

Works in Microsoft Excel (2010+), Google Sheets and LibreOffice. No macros or add-ons. Every file ships as an example copy (filled with made-up data) and a blank copy, plus a 2-page Quick Start PDF. Every formula is recalculated and checked against an independent calculation before release.

Why this one?

• Why not a paper log book? Paper can't flag a low chlorine reading, count missed tests or total the month. Keep the printable sheets at the pool and type them in once a day.
• Why not pool-service software? Apps like Skimmer and PoolTrackr are built for service companies and charge every month; Lanewren is for the operator at one property, a file you own.

See every tab and real screenshots, plus a free preview: cybermaxtools.com/store/lanewren

Licence: Licence for one facility (the buyer's). No reselling or sharing. Record-keeping tool: your health department's code is the rule. One-time purchase, instant download (zip). Questions: cybermax.tools@gmail.com. © 2026 CyberMax.