Weekly Pool Water Test Log

One page per week. Write down each test, then what you added and how much. After a few weeks you'll see patterns, like how fast your chlorine drops on hot days. Target ranges are printed at the top; the full chart with sources is on the ideal chemistry levels page.

Pool water test log

Week of ____________________Pool size ____________ galChlorine type ______________
Targets (pool / hot tub)
Free chlorine 2–4 / 3–5pH 7.4–7.6 / 7.4–7.6Alkalinity 80–120 / 80–120Stabilizer (CYA) 30–50 / noneCalcium 200–400 / 150–250
DayFree ClComb. ClpHAlk.CYASaltWater °FWhat I added (product + amount)
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Notes (rain, heavy use, cloudy water, filter cleaned, backwashed…)

Weekly Pool Water Test Log · SplashSense · www.splashsense.com/printables/pool-test-log