Hanna magnesium reading still high

[Fishingandreefing]

So, it’s being awhile but I just want to make another post after I received the replacement from Hanna. Initially, it appeared to be fixed then I gone through couple of new reagents and now found myself that the Hanna read about 150-200ppm higher than salifert. I reached out to Hanna and they sent me new reagents, same results. Anyone?

 

[Jekyl]

So, it’s being awhile but I just want to make another post after I received the replacement from Hanna. Initially, it appeared to be fixed then I gone through couple of new reagents and now found myself that the Hanna read about 150-200ppm higher than salifert. I reached out to Hanna and they sent me new reagents, same results. Anyone?

I would have an LFS test the results also

 

[Fishingandreefing]

I would have an LFS test the results also

I get the idea of cross checking. Anyone else using the Hanna experienced the same?

 

[BeanAnimal]

I would have an LFS test the results also

Not sure I would trust an LFS to be any more accurate then a hobbyist.

 

[Jekyl]

Not sure I would trust an LFS to be any more accurate then a hobbyist.

It's about getting a second opinion. If you don't trust your LFS to do a simple test, you shouldn't be shopping there.

Sometimes tests are bad, this at least gets some proof.

 

[sc50964]

I had similar exp but with copper, and confirmed with Hanna that they had a bad batch of reagents.

 

[gbroadbridge]

So, it’s being awhile but I just want to make another post after I received the replacement from Hanna. Initially, it appeared to be fixed then I gone through couple of new reagents and now found myself that the Hanna read about 150-200ppm higher than salifert. I reached out to Hanna and they sent me new reagents, same results. Anyone?

The Hanna Mg test is the least reliable of all their tests.

I replaced mine with the red sea test as it is much more reliable.

 

[BeanAnimal]

The Hanna Mg test is the least reliable of all their tests.

I replaced mine with the red sea test as it is much more reliable.

My RedSea is 150 low (two kits 6 month difference in date codes) compared to salifert and a new Hanna
not a Hanna fan, but bought it as a 3rd point of reference trying to get reefbot to up and running.

 

[Randy Holmes-Farley Verified Community Expert]

It's about getting a second opinion. If you don't trust your LFS to do a simple test, you shouldn't be shopping there.

Sometimes tests are bad, this at least gets some proof.

I wouldn't trust an LFS test any more than I'd trust any other random hobbyists test, and those frequently give incorrect results. I agree that as a check it is better than nothing, however.

 

[BeanAnimal]

It's about getting a second opinion. If you don't trust your LFS to do a simple test, you shouldn't be shopping there.

Sometimes tests are bad, this at least gets some proof.

Second opinions are fine.

LFS? I have had a reef for over 20 years and SW since the late 80s… and freshwater before that. I have shopped dozens of LFS over the years. Some great, some terrible, nome of them I would trust for aquarium advice or water testing

Edit:
I see Randy best me to it.