The water is cloudy from the metals going back into solution and the sequesterant - it will clear up, don't worry. I would not start chlroine until tomorrow. Then add enough to get you to 1 to 2ppms. You will need a lot of borax, because the ascorbic acid will take your ph way down. Check it, put in a half a box and test 2 hours later. Keep doing that until you get to 7.2. Don't bring your ph higher than 7.2 for now. Keep your filter running 24/7. Test your alkalinity - if it is low you can use baking soda as well.