mysterybox
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Technically, can Calcium & Alk Carbonates be considered trace elements? or how would you differentiate Calcium, Alk, Mag by definition versus what most consider "trace" elements?
trace elements that I consider are Iodine, Magnesium, Strontium, etc..
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mysterybox
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nevermind! lol
Randy Holmes-Farley
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Just to be clear, none of the things you mention are trace elements, which means they are present at very low concentrations. True trace elements include copper and iron, for example. 
