Don't make any radical changes.I am just lost at this point. I did a 50% water change, threw in API Ammo Lock, bought yet another Master Test Kit and my results still look off the charts. Should I just start from scratch, empty the whole QT and put in new salt water? My high PH result was appx. 7.8, Ammonia appx..0.75, nitrate around 60 and nitrite around 1-2, difficult to match colors exactly.