I don't know if I'd add Ascorbic Acid if you aren't having a problem with staining. It could possibly keep your water cloudy. If it were me (and I am an admitted newbie but I've read a lot) I would skip the AA unless you have a staining problem and just let your chlorine come back down after the shock and the water should be clear.

Do you have combined chlorine in the pool? I agree that you are right about adding the pool magnet. I always just try to add the least amount of "extras" that I need to be effective, that's why I say to skip the AA, it will bring your Ph down as well if you add it.