Following CL test results or Chlorine Drop Test

mnhim001

Well-known member
Jun 4, 2021
49
San Dimas, CA
Pool Size
17000
Surface
Plaster
Chlorine
Liquid Chlorine
Hi,

I do both the CL test and also the Chlorine Drop Test. The CL test does not reflect the chlorine drop test.

My Chlorine drop test shows that I have 1.5 FC and recommended to add 76oz of Chlorine, but doing the CL test, the test visually looks like its already above the maximum line.

FC = 1.5
CC = .5

I also have a digital AquaChek TruTest, and the results did reflect the chlorine drop test.

CL= .9
pH=7.0
TA=110

Is one more accurate than the other? Should I be following the recommendation and add more chlorine?

20220924_065706.jpg
 
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