Was testing water earlier this morning. TA test went from green to yellow after 11 drops. Supposed to turn red. Any ideas what that means?
Am slamming, so FC 31, CYA should have been around 75-80 but tested out really low at 40-50. Suspect invalid test and will re-do at sundown. pH was high at 8.0 or higher. Added some acid and will re-test at sundown.