LOW LOW MAG

Randy Holmes-Farley

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It went down 100 ppm between march 15 and 22. That is test error unless the salinity went way down.

It went down 30 ppm in 2 days on March 23. That is test error too.

Real magnesium consumption at constant salinity is about 0-2 ppm per day, at about 1/10th of the calcium decline. If calcium is stable, so is magneisum.

Magnesium testing is very prone to test error, especially with the Red Sea kit.

i'm not sure I recommend testing it at all.
 

Looking for the spotlight: Do your fish notice the lighting in your reef tank?

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