The Planted Tank Forum - View Single Post - Eco Complete Nutrients?
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post #8 of (permalink) Old 05-15-2010, 04:42 AM
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With particle sizes measuring 1-6 mm this is too large to have significant CEC. I am not saying it really doesn't, just agreeing with Tom.

Once it starts getting some organic matter in there the combined substrate (EC + organic matter) may very well be capable of holding fertilizers.
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