Magnesium testing - which one is the most accurate

[gregrock68]

Need some advice everyone. Looking for another test kit that is most accurate for testing magnesium. I have the Hanna which is not that accurate imo, I also use a Salifert which seems to be more accurate. What have you found to be the most accurate for magnesium?

 

[painter1982]

I use a Trident. Not to really check the value but just the trend. It’s close to the icp tests I’ve had. I don’t think any tests we can do are accurate for magnesium though.

 

[captivereef]

My red sea matches my hanna spot on

 

[gregrock68]

Thx, I am using my trident as well for automated testing but I can't seem to get the magnesium elevated above 1370. The Salifert test is showing around 1450 , do you have any thoughts?

 

[Pistondog]

 

[Fish Fan]

Magnesium can be difficult to accurately test, and many here at R2R no longer bother testing for it. Here's an article from Randy Holmes-Farley that may help:

Just say NO to magnesium testing: RMM is born

OK, this thread has been many years in the making, and I'm posting it here since folks in the chem forum are probably already tired of all the threads relating to problematic magnesium testing. I'm going to propose a method, let's call it the Randy Magnesium Method, or RMM for short. All good...

www.reef2reef.com

 

[Randy Holmes-Farley]

I do not recommend magnesium testing at home. The above
Link explains the better alternative.

 

[gregrock68]

I do not recommend magnesium testing at home. The above
Link explains the better alternative.

Thx RandyHolmes-Farley

You always provide insightful guidance

 

[WhatCouldGoWrong71]

Hanna is not great. Salifert so much easier and closer, especially considering what Randy says. I use Salifert, and I calibrate my Trident to my tank water. The day I send an ICP out at the same time I remove water for the ICP I have the Trident do combined, my Mastertronic prove to me how pathetic it is and I do DKH, CA and MG. Then I compare to the ICP when it comes back.

 

[Sam7]

Time to go test my ph

 

[gregrock68]

Hanna is not great. Salifert so much easier and closer, especially considering what Randy says. I use Salifert, and I calibrate my Trident to my tank water. The day I send an ICP out at the same time I remove water for the ICP I have the Trident do combined, my Mastertronic prove to me how pathetic it is and I do DKH, CA and MG. Then I compare to the ICP when it comes back.

Appreciate your insight. I was thinking along those lines as a combination of testing so I can be somewhat accurate