I mistakenly droppedMy salinity from 1.027 to 1.024…

[Greg P]

105g going from 1.0247 to 1.025 is just over 157mls using Instant Ocean regular.

 

[TheDragonsReef]

Corals and inverts might not like a sudden salinity change but fish will be fine with a change like that

 

[Zeal]

105g going from 1.0247 to 1.025 is just over 157mls using Instant Ocean regular.

I use tropic marin

 

[Greg P]

My measurement is based on my results mixing to 1.026
Just use say 30mls/day and test after adding.
Mix in a container of RO of close-to your tank's daily evaporation and add it to a high-flow area. Or just mix in a cup or two of RO. Up to you.

 

[Randy Holmes-Farley]

I did a water change with 10 gallons of water RODI Hoping it would drop my salinity to 1.025 but instead it dropped it to 1.0247.

The Hanna cannot accurately distinguish 1.0250 from 1.0247. So I'm not sure what the big concern is.