- Joined
- Apr 17, 2018
- Messages
- 323
- Reaction score
- 506
I’m starting up a new tank and I bought a Hanna Salinity tester. I didn’t trust the readings so I compared it to my refractometer. They where completely different. One was reading 32ppt and the other at 40ppt. I took a sample to my local fish store and there reading was spot on with one of mine. Which one would you guess was right?