Reef Chemistry - Conflicting Alk tests

Print Page | Close Window

Conflicting Alk tests

Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: Reef Chemistry
Forum Description: A place to discuss reef chemistry.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=44221
Printed Date: June 27 2025 at 11:54pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com

Topic: Conflicting Alk tests

Posted By: Laird
Subject: Conflicting Alk tests
Date Posted: October 24 2010 at 12:28pm

I have always hated my KH tests. When using the brand "Aqua test" I can get very different results if I do the test twice in a row. Because of this I deiced to get another brand test kit. This one however measures is it ppm, which Im not used to. What levels do you guys keep you alk in ppm?

Is the a formula to go from ppm to DKH, or are they two different test. I'm pretty ignorant when it comes to the different alk tests.

With Aqua test I get 13 dKH

With Hagen I get 110 ppm.

So with one test I get a high reading, and the other I'm getting a low....

-------------
Indefinite hiatus from sw aquariums.

Once I have my glorious return I'll set back up the following.
50 Gallon rimless cube.
180 Gallons mixed reef paradise

Replies:

Posted By: Ryan Thompson
Date Posted: October 24 2010 at 4:54pm

I used Hagen a long time ago. Garbage tests that were never right for me.

Go buy Elos or even Salifert.

API tests are supposed to be alright too.

Posted By: Davidwillis
Date Posted: October 24 2010 at 6:39pm

Here is a conversion tool.

http://www.saltyzoo.com/SaltyCalcs/AlkConv.php

110 ppm is equal to 6.16 dkh

Posted By: Laird
Date Posted: October 24 2010 at 9:25pm

Awesome, thank you!

-------------
Indefinite hiatus from sw aquariums.

Once I have my glorious return I'll set back up the following.
50 Gallon rimless cube.
180 Gallons mixed reef paradise