Specific Gravity

[Reefman29]

So I usually keep my reef tank around 1.024 SG. My problem started when my protein skimmer leaked, at the time I didn't realize and associated the water loss with evap. I added fresh water to correct and was fine until I realized that my protein skimmer was leaking water. So in about 24 hours or less my SG went from 1.024 to about 1.017. I am adding salt slowly back in. All of my corals closed. Will the coral be okay? I also noticed that my snails seemed stunned.

[bertoni]

The corals and snails might survive. It's hard to be sure, but many reefs get rain storms that drop the SG drastically, so the animals might have some adaptability.

[shifty51008]

I agree with jonathan, but to add to his post I would raise the sg. slowly maybe .01 a day till you get it bact up to your normal level.

[hebsway]

I would bring it back up slowly over the course of about 48 hours. I would not want the coral to sit in salinity that low any longer than they have to but dont want to shock them any more than they have been already. I think a couple points in the morning and the evening for 2 days and you will be ok

[Reefman29]

Okay thanks, a couple snails died, but no great loss there. A few corals opened some and I did start to bring it back up. Hopefully by tomorrow everything will be okay.

[oscar.millan]

I would add 1.026 salt water instead of top off until the levels are back to normal. Nice and slow.