Chemical interaction- is this a known problem?

[chem geek]

You never want to mix Cal-Hypo with either Trichlor or Dichlor. See the video on this page to see the result of Trichlor with Cal-Hypo. There are many other bad combinations so Ben's rule is the general one.

[rdkelley]

Thank you for your prompt replies. I am indeed one of those who thought that all shock was the same and had not read the label until after the incident.
Glad I escaped with only a large circle in my yard.

[Watermom]

Glad I escaped with only a large circle in my yard.

We are, too!!