Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started
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 12-14-2011, 02:18 PM   #1
Aquarium Advice Freak
 
Freshnoob1's Avatar
 
Join Date: May 2011
Location: Leonardtown, MD
Posts: 270
Difference between Refractometer and Specific Gravity Tester?

What are the differences? Why get both?
__________________

__________________
Freshnoob1 is offline   Reply With Quote
Old 12-14-2011, 02:50 PM   #2
Aquarium Advice Freak
 
Leighton79's Avatar
 
Join Date: May 2011
Location: Mansfield UK
Posts: 423
Throw the swing arm in the trash and spend on a decent refractometer.

That is all.
__________________

__________________
Leighton79 is offline   Reply With Quote
Old 12-14-2011, 03:01 PM   #3
Aquarium Advice Addict
 
AquaRick's Avatar
 
Join Date: Sep 2011
Location: Northern CA
Posts: 2,638
Quote:
Originally Posted by Leighton79 View Post
Throw the swing arm in the trash and spend on a decent refractometer.

That is all.
+1

Refractometers are much more precise.
__________________
225G Reef Upgrade
AquaRick is offline   Reply With Quote
Old 12-14-2011, 03:24 PM   #4
HN1
Aquarium Advice Addict
 
HN1's Avatar


 
Join Date: May 2009
Location: Ga
Posts: 8,169
You do not need both. As stated refractometers are much more accurate and a must have IMO for anyone with a SW tank.
__________________
Question everything you see on the internet. ~ George Orwell
HN1 is offline   Reply With Quote
Old 12-14-2011, 03:26 PM   #5
Aquarium Advice Freak
 
Sisserydoo's Avatar
 
Join Date: Apr 2011
Location: Melvin, Illinois
Posts: 438
Unless it is for a brackish setup, then the swing arm is fine!
__________________
Sisserydoo is offline   Reply With Quote
Old 12-14-2011, 04:15 PM   #6
Aquarium Advice Freak
 
Leighton79's Avatar
 
Join Date: May 2011
Location: Mansfield UK
Posts: 423
Quote:
Originally Posted by Sisserydoo
Unless it is for a brackish setup, then the swing arm is fine!
Not for me I'm afraid or any other serious reef keeper with thousands invested in livestock/coral.

I have a red sea swing arm that I had when I first started, i like to run my tanks at 1.026, my D-D refractometer allows me to do so.

The swing arm reads 1.023......

Not accurate.
__________________
Leighton79 is offline   Reply With Quote
Old 12-14-2011, 04:20 PM   #7
Aquarium Free - 2+ Years
 
mfdrookie516's Avatar



POTM Champion
 
Join Date: Jul 2009
Location: Winchester, Ky
Posts: 19,410
I don't think anyone is going to have thousands invested in livestock/coral running a brackish tank... not to mention, since brackish environments fluctate in salinity several times a day depending on the tide, accuracy isn't nearly as important.


I will say that I tested an old hydrometer today against my refractometer and got the same result... 3 times... but, that doesn't mean I'd recommend them as I've heard so many times not to trust them.
__________________
-Jonathan

"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry
mfdrookie516 is offline   Reply With Quote
Old 12-14-2011, 04:24 PM   #8
Aquarium Advice Freak
 
Leighton79's Avatar
 
Join Date: May 2011
Location: Mansfield UK
Posts: 423
As I say, it's down to the individual.

You trust two pieces of plastic or a scientific instrument, your call.
__________________
Leighton79 is offline   Reply With Quote
Old 12-14-2011, 04:42 PM   #9
Aquarium Advice Freak
 
Join Date: Sep 2011
Location: Wisconsin
Posts: 429
I agree with everyone here. I got a hydrometer when I first started not knowing any better and I went to have my water tested just to make sure my readings were correct and it turns out my salinity was at 1.026 when my hydrometer said 1.023. Take it for what it is but in my opinion just save yourself the hassle and get the refractometer
__________________
jwalsh is offline   Reply With Quote
Old 12-14-2011, 05:39 PM   #10
Aquarium Advice Freak
 
Sisserydoo's Avatar
 
Join Date: Apr 2011
Location: Melvin, Illinois
Posts: 438
Well, I have like 10 dollars invested in mollies and guppies, so swing arm works for me!
__________________

__________________
Sisserydoo is offline   Reply With Quote
Reply

Tags
gravity, refractometer, spec, specific gravity, tester

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








» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 01:39 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.