sodium thiosulfate

In preparation for draining my pool (new liner on the way) I was looking at threads for dechlorination. I found this thread: Calculator or instructions for sodium thiosulfate? and one response referenced another Best Way to reduce Chlorine level. But the latter link appears to be broken? Is...

Hi there, I'm a new pool owner and after getting a bunch of help in the forum I am doing an ascorbic acid treatment. I have zero'ed out my chlorine with a combo of exposure and a little sodium thiosulfate. Brought pH down to 7.2 and have been following this thread. In addition, I am trying...