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					Originally Posted by  bkelly
					 
				 
				my MgSo4 is fine   its a bigger crystal than the MgCl maybe the  Fauna Marine is  a made up recipe with both,  perhaps that helps keep it dry, think the ratio is 5:3. My MgCl is in an old  IO bucket which has a gasket that i  hammer shut, the bucket is  3/4 empty  now that its a pile of slush  , maybe all that extra air in there is allowing it to  suck so much moisture,  i think ill put  it in  a plastic bag then into the sealed bucket  next batch. 
			
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 I would check the gasket on that bucket. Salts are hygroscopic. (I think thats the word, absorbing water.)  The air in the bucket cannot hold that much water to create slush. Try and find another bucket. However, its too late to save the crystals. But it would stop more water from being absorbed.