How do I safely raise Salinity quickly?

[RussC]

I created a monster. Refractometer was off, did water change, salinity was wrong. Found out my apex salinity probe was also off. So now I have a tank with what looks to be a salinity around 32-33. What can you recommend?

My first thought is to mix up a new batch of 36ppt water. I've got things calibrated now so I believe that should be the easy part. This slowly remove some from sump and replace with 36ppt.

I have a 112 gallon system. My sump is just about 20 gallons. I do a 20 gallon change every two weeks. I was thinking I'd try a 10 gallon mix of 36 ppt.

Here's a question...should I mix up a 37ppt mix to increase a low tank salinity? Or is that too drastic even if I add slowly? I'm just spitballing ideas here. Thoughts?

 

[Gtboosted89]

Don't fallow my advice but you should be ok with your plan. I dropped salinity from about 45 ppt to 37ppt in about 30 mins when I panicked after I found out my tank was being topped off with saltwater for about a week.

Nothing died. Including some sps corals.

 

[Gtboosted89]

I guess I can't edit a post. I meant to write follow. Oh well lol

 

[top shelf]

If you have an ato just add properly mixed sw to that till it gets back up where it should be. Then just rinse ato and add rodi back. You don't want to raise it to quickly and that is one of the safer easier methods.

 

[Shaddow_wolf169]

You can pull some water out and fill you ato with fresh salt water

 

[homer1475]

+1

Fresh salt water in the ATO.

 

[RussC]

Thanks guys.

 

[Ab129]

I don't know about the rate at which you can safely change salinity but there is a resulting salinity calculator on hamzasreef.com that is spot on.

 

[Vinny Kreyling]

Rises in salinity should NOT be drastic.
Do it gradually.
Salinity CAN be dropped in a hurry with no ill effects, done all the time in maintenance
for hypo salinity.

 

[thegrun]

Simply use saltwater instead of fresh water as a top off until your tank hits the desired salinity. Avoid raising your salinity more than 0.001 per day, raising it any faster can do long term damage to your fish. Fish can handle rapid decreases in salinity but not increases.