Hi. This question is about what testing options there are that can be used to test for lower levels of TC and FC.
First, some details:
1st year with in-ground pool
20x40, 3 feet shallow, 8 feet deep end, liner, approximately 24k gallons.
CYA level is 30 ppm
Looking to maintain FC levels around 0.5 ppm.
The question is, what test system is good for measuring at these levels especially for the TC/FC differential?
Let me know if you need more details.