I've used the pool math and Ran tests today, my FC is 2.5ppm, pH 8.2, TA 450-500ppm, CC is 0, and hardness/calcium 800+, CYA is less than 30ppm.
I'm wanting to raise CYA a tad, and get FC to 5ppm, and the pH also needs addressed. Water looks great, super clear, no scaling, just high pH and TA...