Changing salinity

[fiji4118]

Hey all,

Anyone know of a site that gives a break down of how to change salinity? i.e. if I have a 5G bucket of 1.024 and want to make it 1.019 or something how much fresh water would I add/replace? I figure there must be a calculator out there. I know it would be different for changing it upwards based on the salt type but down should be a constant.

Adam

 

[Cake_Boss]

I'm pretty sure there's a math equation for that purpose, not salinity, but the change. Can't remember it though, engineers......?

 

[jahmic]

Edit lol my math was way off. Lemme answer this in the morning when the jet lag wears off. I've done the calculation in the past though.

Nevermind...formula was right I just didn't punch it into my calculator correctly to confirm, haha.

(current salinity)*(current water volume)/(target salinity) = end volume of water

So in your example:

(1.024)(5)/(1.019)= 5.24

So you would need to add about 0.24 gallons of freshwater to your current bucket.

 

[daverf]

Here's a calculator I've used:
http://saltyzoo.com/SaltyCalcs/SalinityAdjust.php

 

[fiji4118]

Thanks guys. Used Davef's calculator on saltyzoo.com.

 

[daverf]

If you're trying to get exact at that volume, the temperature fluctuation may be an issue in getting a reading. .001 change per 10 degrees Fahrenheit up/down. In case you didn't know.

 

[daverf]

Found a calculator I like much better. This guy has tons of other calculators too, great bookmark.

http://www.hamzasreef.com/Contents/Calculators/TargetSalinity.php