NEW Salifert MAG test kit inaccurate

[Shawn7854]

Has anyone used the NEW MAG test kit from Salifert? Its reading 100ppm over the old one and I bought 3 and they all read 100ppm over and my old salifert and aquaforest was reading very similar reading which was 100ppm less

 

[TheSheff]

Has anyone used the NEW MAG test kit from Salifert? Its reading 100ppm over the old one and I bought 3 and they all read 100ppm over and my old salifert and aquaforest was reading very similar reading which was 100ppm less

MAG tests are always inaccurate, randy holmes farley has a thread on it.

 

[Shawn7854]

MAG tests are always inaccurate, randy holmes farley has a thread on it.

But the fact that the new test is reading over 100ppm is the issue do I just manually calculate 100ppm +

 

[Randy Holmes-Farley Verified Community Expert]

Has anyone used the NEW MAG test kit from Salifert? Its reading 100ppm over the old one and I bought 3 and they all read 100ppm over and my old salifert and aquaforest was reading very similar reading which was 100ppm less

All I can say is RMM. lol

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 Verified Community Expert]

But the fact that the new test is reading over 100ppm is the issue do I just manually calculate 100ppm +

Without more testing with more kits, there’s no way to know which, if either, is accurate.

 

[Shawn7854]

Without more testing with more kits, there’s no way to know which, if either, is accurate.

I did ICP test and the old salifert and aquaforest was very close lol and I like to keep them at 1500, my torches do so well and when it drops under 1400 they are not happy

 

[Randy Holmes-Farley Verified Community Expert]

I did ICP test and the old salifert and aquaforest was very close lol and I like to keep them at 1500, my torches do so well and when it drops under 1400 they are not happy

I’m always skeptical of claims of things not doing well under natural conditions (natural seawater does not contain anywhere near that much magnesium), but if you want to keep it high and do not want to use RMM, then I’d subtract 100 ppm from the current kit and see if the corals continue to be happy at your target.