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Thread: How-To: Mineralized Soil Substrate, by Aaron Talbot
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Old 06-16-2008, 01:16 PM   #9 (permalink)
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Default Re: How-To: Mineralized Soil Substrate, by Aaron Talbot
Quote:
Originally Posted by Castaic Fisherman View Post
Is there something special about pottery clay such as higher iron content?

Yes, the higher iron content is the reason I chose the red clay that I used.
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