- Joined
- Jul 7, 2019
- Messages
- 112
- Reaction score
- 17
For the past 2 weeks I’ve been topping off with salt water in order to raise my salinity after I found it to be at 1.020. I’ve been testing the salinity every day, but I’m struggling to get it above 1.022, just crept up to 1.023 at one point.
I use the Hanna Salinity checker, I’ve calibrated it twice but still not getting readings that are going up in line with topping off with salt water. I’ve done some comparison with my refractometer, taking readings from various places.
DT: Hanna = 1.022 (27.9 Celsius), Refractometer = 1.026
Sump: Hanna = 1.022 (27.9 Celsius), Refractometer = 1.026
Top Off Salt Water: Hanna = 1.029 (21.5 Celsius), Refractometer = 1.031
Distilled Water: Hanna = 1.000 (21.4 Celsius), Refractometer = 1.000
I know the Hanna will compensate for temperature, but how much is temperature playing a part in my readings and could this be contributing to the issue I had with lower salinity?
I want to switch back to normal top off, but I want it to be at the right time.
The tank temp reads 27.9 Celsius
I use the Hanna Salinity checker, I’ve calibrated it twice but still not getting readings that are going up in line with topping off with salt water. I’ve done some comparison with my refractometer, taking readings from various places.
DT: Hanna = 1.022 (27.9 Celsius), Refractometer = 1.026
Sump: Hanna = 1.022 (27.9 Celsius), Refractometer = 1.026
Top Off Salt Water: Hanna = 1.029 (21.5 Celsius), Refractometer = 1.031
Distilled Water: Hanna = 1.000 (21.4 Celsius), Refractometer = 1.000
I know the Hanna will compensate for temperature, but how much is temperature playing a part in my readings and could this be contributing to the issue I had with lower salinity?
I want to switch back to normal top off, but I want it to be at the right time.
The tank temp reads 27.9 Celsius