Is your MgCl retaining lots of moisture?

[Myka]

Originally Posted by lastlight

My BRS containers seal tight. So far haven't noticed this.

That's what I have right now, and it's a slushy mess after only being open a month or so, and the stuff I got from ChemMaster was the same.

I find the Fauna Marin gets damp, but not slushy like the "raw" chemicals (like ChemMaster or BRS). Maybe they add something to it? If so, I wonder what