since Mg was mentioned here's what I use : https://www.amazon.com/gp/product/B00F7OZJR8/ref=oh_aui_search_detailpage?ie=UTF8&th=1
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since Mg was mentioned here's what I use : https://www.amazon.com/gp/product/B00F7OZJR8/ref=oh_aui_search_detailpage?ie=UTF8&th=1