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Showing results 1 to 1 of 1 Search took 0.00 seconds. Search: Posts Made By: jollygreenmidget

Forum: Hydroponic Nutrients and Mediums 09-28-2012, 04:38 PM

Replies: 11 Question on Hard Water Views: 20,827 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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