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Old 06/08/2019, 05:43 PM   #1
Registered Member
Join Date: May 2015
Posts: 180
Seachem Reef Advantage Magnesium vs. Red Sea Foundation Magnesium B


This is not about which product is better. I would like to know how to use Seachem Reef Advantage Magnesium (powder/crystals) to make a solution that is equivalent (or approximately) to Red Sea Foundation Magnesium B.

My 500ml bottle of Red Sea Foundation Magnesium B is empty and I have a 300 gram bottle of Seachem Reef Advantage Magnesium (powder/crystals) available.

Your help is appreciated.

rsucre is offline   Reply With Quote
Old 06/08/2019, 06:43 PM   #2
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 87,910
You'd need to use about 70% more by weight, or 40% more by volume, according to this calculator:

Jonathan Bertoni
bertoni is online now   Reply With Quote

magnesium dosing, red sea foundation, seachem

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