Pool computer is an android application for computing chemicals (pH and free chlorine) adjustments to your pool or spa water.

First enter your pool volum in the preferences menu.

First select your unit system (metric, US or UK)

Then enter the pool volum (The default value is 0) in the corresponding volum unit.

Reporting the reading from your test kit

use the sliders to report your PH reading and your free chlorine (CL) reading

use the checkbox if your water has gone green or cloudy (need a superchlorination)

Using the suggested adjustments

PH target: 7.4

PH ok between 7.2 and 7.6 (do not need adjustment)

if PH < 7.0 or PH 7.8 then no chlorine adjustment will be suggested since you need to adjust the pH first. The retest a few hours later.

Free chlorine target:

1.5 ppm (mg/liter) for usual pool sanitizatioon

10 ppm for a shock chlorination

WARNING: Exercice extreme caution when handling chemicals