Red Sea Refractometer

[MetaDev]

Hello everyone,

I am about to go crazy regarding the Red Sea Refractometer. I have went by the directions step by step and reread everything and watched countless videos to make sure I am correct. It is telling me to calibrate it with room temperature RODI Water (70 Degrees F currently) and wait 15 seconds for the ATC to kick in. I have done this over and over and recalibrated it over and over. Each time with a different result. Im taking out the Tank water and replacing it with purely RODI water to try to lower the Salinity Levels to no avail. Should I just toss this thing in the trash and get something else? How long must I wait in between adding water to check the Salinity? Also do I have to Recalibrate it every single time even if it changes almost every single time? I'm relatively new to this and this is driving me crazy.

 

[Saltyreef]

Hello everyone,

I am about to go crazy regarding the Red Sea Refractometer. I have went by the directions step by step and reread everything and watched countless videos to make sure I am correct. It is telling me to calibrate it with room temperature RODI Water (70 Degrees F currently) and wait 15 seconds for the ATC to kick in. I have done this over and over and recalibrated it over and over. Each time with a different result. Im taking out the Tank water and replacing it with purely RODI water to try to lower the Salinity Levels to no avail. Should I just toss this thing in the trash and get something else? How long must I wait in between adding water to check the Salinity? Also do I have to Recalibrate it every single time even if it changes almost every single time? I'm relatively new to this and this is driving me crazy.

I prefer using the tropic marin high precision hydrometer while im mixing my saltwater.
Once i have the salinity dialed in at 77 degrees, I used a cheap coralife deep six hydrometer and marked the real 1.026 level with a sharpie and use that from then on.

Keeps the large fragile glass hydrometer unbroken lol.

Btw the coralife hydrometer was showing 1.030sg for an actual 1.026 reading