I have a 29k gallon saltwater pool in KC (concrete bottom/fiberglass sides). Took off the cover last night. Tested the water. No CYA read. PH around 7.4. CH 220. TA 60. I have a source for liquid chlorine so went there today but there pump wasn't working. The guy that was helping me said he just pours powdered shock from Lowes in his pool. I decided to try that to get things going. Went to Lowes and found one box of Clorox Shock XtraBlue. Came home and dumped all 6lbs in the pool. Knew better but brain was in the clouds. I had also filled two socks with stabilizer and had them placed in front of the returns. Upon reading that the XtraBlue raises CYA, I removed the half empty socks and set aside until I can get a good CYA reading. I will go to WalMart and get some bleach to continue my opening process, but want to know what kind of corrections I need to make after adding these 6lbs of XtraBlue? Can I slap my hand and not do it again or do I need remove that copper I added and am I potentially at risk of having adding too much CYA? Thanks much!