[Jewelry making - Article 00216] - Re: [Orchid] Recycling investment

[John Dach]

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    The humic acids in an active soil will etch many minerals from rock/
    sand/clay materials. Calcium is one of the most soluble mineral
    elements in soils thus is one that is often short in supply due to
    rain water removal over time. Calcium is one of the main ingredients
    in the investment and is a VERY important plant nutrient. Also more
    elements will dissolve in water than any other liquid, ie the oceans
    have most all the elements dissolved in them. 

John Dach


 
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