Well,I finally figured out what happened.I ordered a new Salifert tests after my crash,and found out my ALK was at 15. I did test with Salifert test and API test that I have at home ,little over 1 year old(but the expiration dates on both show 2013) and both showed my ALK at 7-8. Lesson learned,use only new tests, less than 1 year old.I stopped dosing ,will let ALK go down slowly and see what happens next.Very few colonies survived,they lost their color too,but will try to save what I have left.All my LPS and clams still doing great.