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Unread 03/07/2018, 10:25 PM   #5
bertoni
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
You might be able to make a stronger bicarbonate solution, but it'd probably take some effort. I'd just use 1⅛ cups per gallon:

http://reefkeeping.com/issues/2006-02/rhf/index.php#11


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