Well, here's where it gets kinda murky... lol excuse the pun.
Sometimes with new members, we advise to keep it at shock level till the water is clear.... just to avoid some common mistakes amongst new converts. But TBT, if you are 100% certain the FC held overnight (meaning you confirmed at say 10pm the FC wasn't actually higher than 22?) Sometimes when you test 30-60 minutes after bleach additions, and then again say, an hour or two later having added nothing, you might see a higher number. It has happened. So in reality your FC could have been say, 24 and you may have actually had a 2ppm drop. I hope that makes sense... :?
So What I would suggest, in your case, is keep it filtering today. Let the FC come down naturally and test your PH and TA levels. This evening, after the sun is off the pool (if there is sun, lol) test the FC. If it's still up above shock level (for your CYA of 30 that is 12) don't add anything at all. Then tomorrow morning before sun hits the pool, test it again. Without any bleach additions around testing time there will be no question whatsoever as to the level.)
If the FC is for sure holding, then let it drop to normal. Then you can either let the stuff settle and vac to waste or keep filtering, have some POP.
As for the addition of salt - (and CYA cuz 30 isn't high enough with an SWG) honestly, I think you should tackle one thing at a time - it is very easy to get overwhelmed at first especially when you have several things happening.
A little bit of bleach each evening for a couple of days is a piece of cake so lets clear this up first.
