Welcome to our forum.
You can use either mps(non chlorine shock) or dichlor for shocking. To shock with dichlor you must dose to atleast 10 x the amount of CC. Therefore if your CC is .5 you'd have to add atleast 5ppm. Remember to test for FC 5 - 10 minutes after dosing.I think most daily dichlor users here including myself shock with mps a couple times a month while supplementing a good superchlorination once a month. This will help keep your CYA level down.
CC = combined chlorine, and FC = free chlorine. What is CYA? :-?