Salinity will not go down

BrownCow

Member
View Badges
Joined
Dec 3, 2019
Messages
10
Reaction score
7
I'm adding almost half a gallon of purified water daily and the salinity is just not going down at all. What am I doing wrong?
 
https://www.omegasea.net/

BeejReef

Valuable Member
View Badges
Joined
Jan 29, 2019
Messages
3,219
Reaction score
15,960
Location
Oxford, Pennsylvania
If you're replacing saltwater with freshwater, the salinity is going down. Has to be. Would strongly advise checking the calibration of your refractometer and doublechecking your readings with an LFS or a borrowed refractometer before making any adjustments.
 

Js.Aqua.Project

Reef Addict
View Badges
Joined
Apr 29, 2016
Messages
1,308
Reaction score
2,913
Location
Ocala, FL
If you are adding 1/2 gal of RODI per day as top off, all it will be doing is returning the salinity to its previous level.

If you are intentionally trying to lower your salinity, you will have to remove saltwater and replace it with fresh.
 

Greybeard

Valuable Member
View Badges
Joined
Feb 10, 2017
Messages
2,481
Reaction score
6,074
If you're just replacing evaporated water with fresh water, you're not going to change salinity.

Salt doesn't evaporate.

To lower salinity, you need to remove salt water and replace it with freshwater. Salinity will drop. Has to.

Why is your salinity high? What level is your salinity at? What tools are you using to measure salinity?
 

Barnabie Mejia

Active Member
View Badges
Joined
Jun 10, 2019
Messages
268
Reaction score
636
Location
El Paso, Texas/ Chamberino, New Mexico
If you're replacing saltwater with freshwater, the salinity is going down. Has to be. Would strongly advise checking the calibration of your refractometer and doublechecking your readings with an LFS or a borrowed refractometer before making any adjustments.
This ^^^^^ I too say to check the calibration on your refractometer and have the LFS check the salinity for you. I always use a hydrometer and check it again with a refractometer. personally I would take out say 1 glass full of saltwater and replace it with 1 glass of RODI water, give it 5-10 min and then check it again. and if it is still high, repeat. I had to do this on my 29g back in the day when I didn't have an ATO.
 

sde1500

Well-Known Member
View Badges
Joined
May 6, 2016
Messages
904
Reaction score
1,484
If that is just for top off, yea it won't go down. But 1/2 gallon a day, do you have a large tank? If it is taking saltwater out, and adding RODI, your salinity is going down, may want to stop immediately and have your equipment checked/calibrated. Or review how you are testing, something is wrong.
 
OP
BrownCow

BrownCow

Member
View Badges
Joined
Dec 3, 2019
Messages
10
Reaction score
7
I'm adding almost half a gallon of purified water daily and the salinity is just not going down at all. What am I doing wrong?
Thank you all for your answers after hearing them I feel quite stupid for asking. I have been only topping off with to purified water not replacing it. My question now is when I do take out some salt water to put in the purified water how much should it be? I have a 50 gallon tank and my salinity is currently reading 1.027.
 

Silver14SS

Valuable Member
View Badges
Joined
Apr 8, 2017
Messages
1,958
Reaction score
3,461
Location
Charlotte, NC area
Thank you all for your answers after hearing them I feel quite stupid for asking. I have been only topping off with to purified water not replacing it. My question now is when I do take out some salt water to put in the purified water how much should it be? I have a 50 gallon tank and my salinity is currently reading 1.027.
Please don't feel stupid, you learn by asking questions and everyone starts in the hobby somewhere :)

Here's a calculator to play around with that I think will answer your question:

Edit - @Another Newbie Reefer beat me with the link to Hamza's site :)
 

Auquanut

Valuable Member
View Badges
Joined
Mar 11, 2018
Messages
2,726
Reaction score
13,048
Location
Mexico, Mo
Thank you all for your answers after hearing them I feel quite stupid for asking.
First off, and this is very important: There are no stupid questions! The only stupid question is the one that goes unasked.
Secondly, 1.027 SG isn't going to hurt anything. It can easily be brought back down as mentioned above.
Lastly, Welcome to R2R! The home of friendly reefers and great, non-judgemental advice.
 

robbyg

Well-Known Member
View Badges
Joined
Sep 8, 2019
Messages
619
Reaction score
689
As others have said, don't worry about 1.027. It'll come down on its own with normal water changes. However, if you want to target a specific number, try this calculator: https://www.hamzasreef.com/Contents/Calculators/TargetSalinity.php
It is best to lower the salinity now. The salinity will not creep downward it will always creep upward. If your using two part it will creep a lot faster. If your salinity is droping on its own I suggest you look to see if you have some form of slow leak. I assume that you are matching your water change salinity to the tank salinity, if not, then yes you can manipulate the salinity during water changes.
 

CasaReefer

Promoted To Sponge
View Badges
Joined
Sep 22, 2019
Messages
1,104
Reaction score
4,707
Location
Surprise, AZ.
What's Up B.C... Welcome to R2R... Glad you asked your question.. It is question like this that help a lot of Noob's.. Like me I am a Noob.. And the people in here are So Nice... They let me stay... lol And Wicked Smart. the key is ASK.. even if your just thinking about doing or changing something in your tank Ask.. These guy's can help you avoid the big mistakes... Can't wait for you to post some pics of your Awesome Set up.. Why do we like pics... Cause we all are Nosy...:)
 

What's the "sweet spot" in spending for a SINGLE fish?

  • $25 or less

    Votes: 37 6.6%
  • $50 or less

    Votes: 209 37.5%
  • $75 or less

    Votes: 131 23.5%
  • $100 or less

    Votes: 91 16.3%
  • $150 or less

    Votes: 18 3.2%
  • $200 or less

    Votes: 17 3.0%
  • If I like it I buy it no matter the cost!

    Votes: 55 9.9%

Online statistics

Members online
2,240
Guests online
8,516
Total visitors
10,756
Ultimate Corals
Top