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Old 11/24/2020, 06:36 PM   #2
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Join Date: Jun 2005
Location: 600 Ft From the Reef
Posts: 2,099
I have the same problem after WC just not as bad with Reef Crystal. Mine will go to from 1380 to 1450. I hear some other brands will raise the levels even more. The only way to quickly lower Mg is typically to do water changes but that is not an option in this case as you would have to use another brand of salt, that may do more harm than good. I think dosing using Kent Calcium and Sodium Bicarbonate to keep the Alk and Ca steady should bring down the Mg over a period of days or weeks depending on your tanks demands. I would stop using 2 part as that will just add more Mg. When things are back to normal then go back to the 2 part.

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