- Joined
- Nov 23, 2019
- Messages
- 1,539
- Reaction score
- 979
I recently got a salifert calcium kit since my old one was running low. To my surprise though they both told different results by a large margin, my old one reads 425 while the new one reads 490. How can i know which one is correct? Because for weeks i tested mines at 445 and dipped to 420 today on the old one. I just wanna make sure i keep it stable since im dosing 2 part.