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Search: Posts Made By: jollygreenmidget
Forum: Hydroponic Nutrients and Mediums 09-28-2012, 04:38 PM
Replies: 11
Views: 15,909
Posted By jollygreenmidget
I work at the coal mines here in WY. I was...

I work at the coal mines here in WY. I was wondering if you could crush up coal and substitute it for charcoal in the charcoal filters.
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