Good Summary of Reef Parameters

Holmes-Farley's: http://reefkeeping.com/issues/2004-05/rhf/index.php

Could we get something like this stickied for quick reference?
 
@fperkins wrote:
Holmes-Farley's: http://reefkeeping.com/issues/2004-05/rhf/index.php Could we get something like this stickied for quick reference? said:
This article is my go to when I have any questions about chemistry.
 
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