Tap water test results - pre fill


Bronze Supporter
Sep 18, 2019
Puerto Rico
I just tested my house tap water to start using my TF-100 kit and to prepare for when my pool gets installed. Below the tested values:

FC: 0.5
pH: 7.5
TA: 170
CH: 175
CYA: not tested

CYA wasn’t tested since I have read that no CYA should be present on tap water.

I’m concluding that only dry stabilizer and liquid chlorine would be required for startup. I’ll appreciate your feedback.

Rattus Suffocatus

Silver Supporter
Jun 5, 2019
Corona de Tucson, AZ
You will be adding acid as well because pH will go up fast with 170 TA. Your startup water is almost identical to mine. Have muruatic acid on hand but don't add it on day one. Having a vinyl liner pool will make it a bit less touchy than my gunite pool, though.