Tuesday, September 12, 2023

13 SEP 23



 RONALD KH: water feature CL 0















RONALD KH: swimming pool CL 3.0,pH 7.8

 

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20 JUNE 2024

[14:38, 20/06/2024] Edwin Chen 013: All OK? [14:45, 20/06/2024] Leung KH🍀: Okay [14:46, 20/06/2024] Leung KH🍀: 3,329ppm [14:46, 20/06/2024...