When to Shock?

[duraleigh]

Dave, I just wanted to check, you say "overnight", as in, keep adding until I can maintain shock level overnight?

Yeah, sometimes I sacrifice clarity for brevity.

If you can hold Cl levels overnite, not dropping more than 1 maybe 2ppm, that will tell you you have finished killing the organics in your pool.

Only AFTER that occurs should you let your Cl go back to maintenance levels.