Formula for lowering salinity

[gebman]

I was wondering if there was a formula for lowering the salinity of your tank.. Say you are reading 1.026 and want to bring it down to 1.022 and you know the total volume of water in your system including sump. Is there a formula that results in: "remove 10 gals and add back 10 of fresh" or maybe even just add x gallons to sump? Thanks..

 

[keithntracy]

i'm not a pro at this yet, but i think you need to lower it slowly.

 

[E-A-G-L-E-S]

25% w.c. at 1.009 will bring you to 1.022

you can lower salinity by .004 every 24hrs., but only by .002 every 24 hrs. if raising

 

[old salty]

Yes there is, but since leaving school my calculus has been quite rusty. I'm sure any math teacher here could whip it out in no time.

 

[nc2tarheels]

after you've done it a while, you'll stop measuring even salt per gallon

 

[E-A-G-L-E-S]

<a href=showthread.php?s=&postid=7040549#post7040549 target=_blank>Originally posted</a> by nc2tarheels
after you've done it a while, you'll stop measuring even salt per gallon

to lower salinity safely? you lower yours that often?

 

[mhurley]

Salinity Adjustment Calculator:
http://saltyzoo.com/SaltyCalcs/SalinityAdjust.php

 

[gebman]

that is exactly what I was looking for mhurley.. thank you very much.

 

[mhurley]

For some reason, I find that calc seems to work better when you use salinity numbers versus specific gravity numbers.

 

[sarduci]

Remove a gallon of tank water, add a gallon of fresh. You have a 125g tank, so that's fine. I do it in my 90g when it drops a gallon from evaporation, add a gallon of fresh water that is. It takes a bit to get it to where you want, but it won't shock the system.

 

[nc2tarheels]

<a href=showthread.php?s=&postid=7040565#post7040565 target=_blank>Originally posted</a> by E-A-G-L-E-S
to lower salinity safely? you lower yours that often?

no but if i'm a little low, then I add a lil more salt to the mix. Same goes if I'm a little high on the salinity level. I'll just adjust. I've done it two straight years on my tank and have yet to have a single fish die. :smokin:

 

[Sk8r]

Slowly, slowly, slowly: critters abhor sudden moves. 1.022 is pretty low. I run 1.024 ordinarily, verging on .25.

 

[Fred_J]

You should check into getting a refractometer, that is if you aren't using one already. The $40 price will be worth it the first time you compare it to your swingarm.