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Re: [APD] Cation Exchange Capacity

On 12/1/05, Derek J. Arthur <djarthur at gmail_com> wrote:

>  What does having CEC in the substrate serve?

 High CEC serves as a marketing tool for selling expensive substrates.
That's very important.

If you are dosing through the water column it doesn't make any difference at
all that I can see, except for that marketing thing.

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