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Old June 10, 2016   #3
BigVanVader
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Join Date: Mar 2014
Location: Greenville, South Carolina
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Yeah, I hate to even post these sometimes but I personally had no idea copper was a heavy metal that persist in the soi, or that it can create a toxic environment for worms. I doubt I use it enough to cause those issues, but I'm not willing to risk it either.
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