elviraveloz
New member
Don't get me wrong I love Hanna alkalinity and nitrate checkers, but unfortunately in my experience failed too. Not too long ago we had problems when reagent started going Low at the end of reagent,Hanna blamed caps on the bottle when bottle was standing on the side. To me most critical point is alkalinity so, I always use Hanna but when reading turns one way or the other I always double check with Salifert before making a decision. Good practice is double or triple check with different brands.