Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Fish Only & FOWLR
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 01-25-2010, 08:13 PM   #1
Aquarium Advice Regular
 
Join Date: Aug 2009
Location: New Jersey
Posts: 72
1.020 Salinity

Like an idiot I never calibrated my refractometer when I got it. Just did it today and realized my salinity is at 1.020. The fish and cuc are doing fine, so it seems. Could this be a reason why there seems to be a loss of coraline algae in my tank and not much life on the live rock? I was thinking of trying to get the salinity back up to 1.026 gradually by adding saltwater to top my system off instead of just ro water. Would this be ok?

Any other suggestions would be greatly appreciated. I'm such an idiot
__________________

__________________
tdubrow is offline   Reply With Quote
Old 01-25-2010, 08:53 PM   #2
Aquarium Advice Freak
 
Join Date: Oct 2009
Location: Ontario, Canada
Posts: 297
I'm not sure on your questions, but there is an LFS by me that has a specific gravity of 1.018! So I am not surprised your fish are doing fine.

The only thing I could see with the top off thing is that rate at which you change it. How much of your tank usually gets replaced each day? Maybe you could put in instead of RO water like 1.01 water and then it will slowly go up?
__________________

__________________
th08tu is offline   Reply With Quote
Old 01-25-2010, 10:16 PM   #3
Aquarium Advice Regular
 
Join Date: Aug 2009
Location: New Jersey
Posts: 72
Quote:
Originally Posted by th08tu View Post
I'm not sure on your questions, but there is an LFS by me that has a specific gravity of 1.018! So I am not surprised your fish are doing fine.

The only thing I could see with the top off thing is that rate at which you change it. How much of your tank usually gets replaced each day? Maybe you could put in instead of RO water like 1.01 water and then it will slowly go up?
I replace 1 gallon every other day.
__________________
tdubrow is offline   Reply With Quote
Old 01-26-2010, 12:20 AM   #4
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
I would say topping off with saltwater is OK. That's what I've done when I've needed to bump my salinity up.

How big of a tank are we talking about? 75g or so?
__________________
Kurt_Nelson is offline   Reply With Quote
Old 01-26-2010, 08:28 AM   #5
Aquarium Advice Regular
 
Join Date: Aug 2009
Location: New Jersey
Posts: 72
Yup, its 75 gallons.
__________________
tdubrow is offline   Reply With Quote
Old 01-26-2010, 09:01 AM   #6
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,812
So your topoff is 1 gallon per day?
Great, mix that up to 1.030 SG and use that for your top off till the tank slowly comes back up to 1.025.

Fish do quite well at 1.020, corals need it higher (as you found out).

How did you calibrate your refractometer? Did you use a solution or DI water?

I generally do both and check it quarterly.
cmor1701d is offline   Reply With Quote
Old 01-26-2010, 09:04 AM   #7
AA Team Emeritus
 
austinsdad's Avatar


 
Join Date: Mar 2004
Location: Accokeek, Maryland
Posts: 7,694
Distilled water would calibrate.
__________________
-Ray-

"Life may not be the party we hoped for but while we are here we might as well dance!"

austinsdad is offline   Reply With Quote
Old 01-26-2010, 09:55 AM   #8
Aquarium Advice Regular
 
Join Date: Aug 2009
Location: New Jersey
Posts: 72
Quote:
Originally Posted by austinsdad View Post
Distilled water would calibrate.
I used my RO water to calibrate. Is that ok or should I get some distilled water?
__________________
tdubrow is offline   Reply With Quote
Old 01-26-2010, 10:58 AM   #9
AA Team Emeritus
 
austinsdad's Avatar


 
Join Date: Mar 2004
Location: Accokeek, Maryland
Posts: 7,694
I dunno. CMOR??? You said it. Does it work?

tdubrow - I'd get some anyway. You can use the rest in the iron. Keeps the hard water stains at bay.
__________________
-Ray-

"Life may not be the party we hoped for but while we are here we might as well dance!"

austinsdad is offline   Reply With Quote
Old 01-26-2010, 12:37 PM   #10
Thanx but no.....


 
Join Date: Jun 2008
Posts: 2,333
same thing.. pure water (assuming 0 tds RO)
__________________
CaptainAhab is offline   Reply With Quote
Old 01-26-2010, 12:38 PM   #11
SW 20 & Over Club
 
ccCapt's Avatar


 
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,365
Send a message via ICQ to ccCapt
RO/DI water will calibrate it for use with saltwater (saline solution), except we use seawater. To accurately calibrate it at 35 ppt (1.026) you need to use a calibration fluid.
If you calibrated with RO water, you will read a little higher than it actually is. If you see 35 ppt, it's more like 33-34 ppt.

Very good article on calibration here.
Reef Aquarium Salinity: Homemade Calibration Standards by Randy Holmes-Farley - Reefkeeping.com
__________________
/Larry
125g reef
See My Tank Info
Check out The build project
ccCapt is offline   Reply With Quote
Old 01-26-2010, 03:50 PM   #12
Aquarium Advice Regular
 
Join Date: Aug 2009
Location: New Jersey
Posts: 72
Great Article. Thanks so much.
__________________
tdubrow is offline   Reply With Quote
Old 01-27-2010, 10:19 AM   #13
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,812
There is BIG difference between RO water and RODI water. If you are using RODI water that is at 0 tds then there is no difference between using that and distilled water for calibration. But that's calibration at 0. To be sure you should always test using some standard calibration fluid (about $5) or make your own per the instruction in the linked article.
__________________

cmor1701d is offline   Reply With Quote
Reply

Tags
salinity

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Salinity? 7www7 Saltwater Fish Only & FOWLR 8 01-07-2009 10:00 PM
salinity 1.18 special lighting Saltwater Reef Aquaria 10 12-27-2008 07:46 PM
Salinity. Joey17 Freshwater & Brackish - General Discussion 12 08-31-2005 03:37 PM
Is salinity of 1.020 ok for snails? equinecpa Saltwater Reef Aquaria 4 01-09-2005 09:30 AM
SG at 1.019 - 1.020 reefobsessed Saltwater Reef Aquaria 11 11-21-2003 07:54 PM







» Photo Contest Winners







All times are GMT -4. The time now is 09:43 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×