Salinity question

[H.garza10]

My salinity has droppedon my 40 gallon breeder. I’m guessing as my tank has matured my readings were inaccurate. It’s not dangerously low or anything (1.21-1.22). Im going to remove 5 gallons and make a fresh batch of Salt water with Reef Crystals. My question is, what salinity would the 5 gallons need to be to bring up the 40 total gallons to 1.24-1.25

 

[BigHildy53]

I suggest making the replacement water at 1.025 and performing small water changes to raise the salinity over a few days to a week.

 

[Ucyibd1]

I would raise it back up over the course of a few water changes, wont be as shocking on your inhabitants.

 

[theMeat]

Have no idea but raising salt too quick not good. Not that you’re raising it that much.
Would add new saltwater with top off til you get it up where you want.
Skimmer is a salt sucker and bring salt level down over time.

 

[zalick]

Not sure on the math .

I raise my salinity by adding salt water as top off. Slow and steady. Works great.

 

[ca1ore]

You’d need to mix 5 gallons to about 1.040; but I agree it’s better done in increments.

 

[ZoWhat]

BACK UP.... you using a swing arm or refractometer?

Refracto....how are you calibrating it?

 

[H.garza10]

BACK UP.... you using a swing arm or refractometer?

Refracto....how are you calibrating it?

Refracto calibrated with Calibration fluid

 

[krash7172]

I make minor increases to salinity between water changes by adding salt directly to my sump. I like the new water and DT to be the same before a WC.

 

[Tastee]

Have no idea but raising salt too quick not good. Not that you’re raising it that much.
Would add new saltwater with top off til you get it up where you want.
Skimmer is a salt sucker and bring salt level down over time.

Not sure on the math .

I raise my salinity by adding salt water as top off. Slow and steady. Works great.

+1 on the above.

 

[mike550]

Same as above. Make water changes using the salinity you want at end. Eventually you’ll get to your target. You won’t notice much change at first since you’re only changing 5%-ish at a time