old salt
Just my 2 cents worth.
I recently used up a small bag of Corallife Salt, that wasn't too old, but was in an open plastic bag. The salt was only slightly clumpy (ie not too much moisture) but the hydration of some of the buffers etc gave a resulting ph of 7.6. So I second that; use only fresh dry sealed salt (I like the instant ocean buckets). And like Brad said; for the $5/week or less for salt mix why risk it.
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John
its all about quality, not quantity.....
...when in doubt buy a Binford....
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