First test on new water

[czechscott]

I just got my test kit and did all of the tests. My results below:
FC-8
CC-0
TC-8
pH-7.5
T/A-130
CH-430
CYA-80
24K gunnite, replastered Sp.2007
Just to make sure- According to the Pool Calculator, it says I need to replace 50% of the water to lower the CYA. The hardness test says I should replace 40%. I just want some assurance before I replace 12K gal. of water. Thanks

 

[JasonLion]

You don't have to replace any water, though it would probably be a good idea. The recommended CYA level is from 30-50, but CYA up to 80 is manageable. Similarly, the recommended CH level is from 250-350, but 430 is manageable. Personally, I would do a 20% water replacement now and then leave the rest for next season. But you can manage with your current levels, or do the 50% replacement.