Raising salinity from 21% to 25%

[capthutch]

Stepson tried to help out while we were away on Vacation and made/used water at 21% instead of 25%. ( I wondered why my corals looked a little sheepish)! My question is will it have a negative effect if its done all at once (WC back to 25%) or just do it over a two week period? The next question would be w/a 75 display, 30 sump and a 10 fuge that's at 21% what would you make the 10 gal WC salinity to be around 25% when you were done? Thanks in advance,

 

[johniii]

If you use an ato just put salt water in it. Even if its mixed lower it will still bring salt levels up. Water evaporates salt does not

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[capthutch]

No ATO, still doing it the Ol fashioned way! Can't get too "automated" at once, gotta have something to $itch about!

 

[johniii]

CaptHutch;878945 wrote: No ATO, still doing it the Ol fashioned way! Can't get too "automated" at once, gotta have something to $itch about!

I highly reccomend an ago. But you could still just add salt water for ato.

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[rdnelson]

JohnIII;878946 wrote: I highly reccomend an ago. But you could still just add salt water for ato.

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The biggest advantage to having an ATO is how it maintains constant salinity in the tank. The ease of not having to manually top off is just a perk.



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[ralph atl]

don't do it all at once.

raise it up a little each day (or even 2 times a day).

certainly a water change would be fine to raise it 1 point......

 

[snowmansnow]

as long as you're heading in the right direction I'd say everything will survive and you'll never know the difference.
If I ever need to raise mine I just mix up some water that has really high salinity and add it little at a time.

Its probably not the safest method, but its simple and it works for me.

b

 

[jcusmarine]

Make sure you calibrate your refractometer and double check. Measure twice cut once....

 

[freezerrat]

I've had salinity drop from guesstimating top-off amounts and not monitoring salinity. I just used salt water for top-offs until it was where I wanted to be. There we're no ill effects just raise it slowly.

 

[capthutch]

I mixed to 26% 10 gal, added it and raised the overall to 24%. No ill effects noted. I will do another Sunday or Monday and get it back to 25%. An auto top off would be nice but I have a lot of questions concerning the use of 1.