[APD] Re: substrate vs the water column

["Tom Wood" <tomwood2 at flash_net>]

TW: So, if the plants are indifferent to the location of 
nutrients, then why bother with any sort of fancy substrate at 
all?

RJS: Aesthetics?

By 'fancy' I meant specially formulated so it has things like, 
you know, 'power' in it.

Or binding sites and micro-currents.

Any of that stuff.

TW 


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