How quickly can salinity be increased?

[Trailermann]

Because of a poor refractometer calibration fluid bottle, my display tank has been running with a salinity level of 1.015. Needless to say, none of my corals have been doing well. How can I safely raise it to 1.025?

 

[Mal11224]

You will need to add salt water to your ATO reservoir and let it happen as fast as your evaporation takes place. Trust me, you will do more harm than good if you try to increase it quickly. You may also be able to do a 50% water change to kick start it. Using slightly higher salinity than the level you are trying to achieve.

 

[LobsterOfJustice]

You will need to add salt water to your ATO reservoir and let it happen as fast as your evaporation takes place. Trust me, you will do more harm than good if you try to increase it quickly. You may also be able to do a 50% water change to kick start it. Using slightly higher salinity than the level you are trying to achieve.

Agree 100%. If you panic and start raising salinity, you will make it worse. Let it raise over a week or two from evaporation and top off with saltwater.

To answer your question though, I wouldn't want to raise salinity by more than about 0.002 - 0.003 per day.

 

[Randy Holmes-Farley Verified Community Expert]

I agree too. Replacing evaporated water with salt water is a good way to go adequately slow.