You won't have a reading for CYA unless you've added it to the pool. You do need to add some, though, whether you add it in in the form of straight CYA or whether you turn off the SWCG for awhile and just use trichlor pucks or dichlor powder, both of which will raise your chlorine, lower your pH, and raise your CYA. Most SWCGs require a high level of CYA to extend the cell life--check your owner's manual for what amount your unit requires.

You can ignore the bromine scale--this is a chlorine pool, so you won't have any bromine. Your pH, alk, and calcium are high. You can lower your pH and alk by using muriatic acid and the steps listed in the sticky under the "alkalinity and calcium" part of the forum (you'll have to log out and read it that way until your registration is upgraded--right now you wouldn't be able to follow a link there). You want your pH to be around 7.2-7.6. The alk will come down with the pH when you add the acid--the explanation is in the sticky.