Mg Cl hard, still good?

[watson_barrett]

My container of Mg Cl from BRS got all hard. It is the newer style that is sugar grain size not the old larger flake stuff. Not sure if some moisture worked its way into the container or what. I can still get it to break into fine grains with a large spoon. It is probably only about 6 months old or so (no more than 1 year)

Will it still be ok to use as a supplement or is it possibly ruined?

LMK thanks.

[Randy Holmes-Farley]

It gets hard if it gets damp and redries. Mine is rock hard, but is still fine.

It hardens because it easily turns partly to liquid in humid air, then when it dries again, it solidifies into a big chunk. But chemically it is unchanged.

[watson_barrett]

great thanks randy.

[Randy Holmes-Farley]

:thumbsup:

Happy reefing. :)