Just throw the sample out once it turns clear. That is your endpoint.
A lot of times there is some algae hiding behind lights or in/on ladders.
Just to give a final update, I tested everything this morning, and this is what I got...
FC - 6.5
CC - 0
pH - 7.5
TA - 80
CH - 225
CYA - 30
My total chlorine add this morning was 10 ounces. I added 32 ounces of CYA Thursday evening. I finished wringing it out of the sock this morning. I tested, even though it might not be totally accurate. The 30 is up from 20, and is hopefully on its way to 40. I brushed the pool, even though I could not see any accumulations of anything. It is wonderful. For any new members, this system is as painless, and "trouble free" as the name claims!
Just to give a final update, I tested everything this morning, and this is what I got...
FC - 6.5
CC - 0
pH - 7.5
TA - 80
CH - 225
CYA - 30
My total chlorine add this morning was 10 ounces. I added 32 ounces of CYA Thursday evening. I finished wringing it out of the sock this morning. I tested, even though it might not be totally accurate. The 30 is up from 20, and is hopefully on its way to 40. I brushed the pool, even though I could not see any accumulations of anything. It is wonderful. For any new members, this system is as painless, and "trouble free" as the name claims!