Thread: Cheap, Easy Subtrate Suggestions! Help a Noob!
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Old 10-28-2009, 03:42 AM   #12 (permalink)
DevinWolfe
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Originally Posted by abaddon669 View Post
what is "CEC"?
CEC is basically how well the substrate holds and transfers nutrients.

http://www.microsoil.com/CEC.htm
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