The bad news is that Pool Doctor can’t support shocking with dichlor (sorry!).
The good news is that my new app, pooldash, can. Just select the Default Dichlor recipe after creating your pool.
The short reason for this is:
- Shocking your pool with dichlor causes the Cyanuric Acid levels to spike
- The chemical calculation engine in Pool Doctor doesn’t handle this type of side-effect well
- The recipe system in pooldash is built specifically to account for this stuff
More info here: Shock with dichlor?