Go ahead and add enough bleach to get back up to 10 since you have a CC reading of 1. ( You want the CC to be zero.) In a 25K pool, each quart of 6% bleach will raise the chlorine level by about 0.6ppm. You want to test and add bleach at least twice per day and probably 3x if you can and each time add enough bleach to get back up to 10ppm. Do this until you can go from sundown one day to sunup the next day without losing more than 1ppm of cl.

You probably still have most of the CYA in the sock. Keep it in front of the return jet and give it a squeeze a couple of times a day to help it dissolve faster. Don't test for it or add more CYA until about a week after you added it to give it time to register.

Add a half a box of Borax and see how high that takes the pH. You are above 7.0 now, so that is good. Aim for 7.4-7.6.