My new TF-100 arrived today and I tested the water. Now, I have a few questions about the results. First, here are the results:
FC - 2.5
CC - 0
TC - 2.5
pH - 7.7
TA - 260 (tested twice)
CH - 370
CYA - 35 (maybe 40...darn black dot)
My questions are...
a) Should I shock even though the CC is 0? According to Jason's calculator, normal FC levels should be between 3 and 7.
b) Why would my TA shoot up so quickly and is it a problem? I've had the water tested at the pool store pretty regularly and it's always been in the low 100's. Late last week I dropped the pH to about 7.2 and aerated to lower it, but I never tested it again until today.