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Re: [APD] RE: substrate vs the water column

--- "Richard J. Sexton" <richard at aquaria_net> wrote:

> In Aponogeton, the tuber is the storage, the up to a foot
> long white
> roots coming from the crown seem to have no purpose if
> not to seek out
> and assimilate nutrients.

This seems to me to miss the mark; the issue isn't whether
plants feed from roots, but whether root feeding does
anything for for submerged plants than water column
feeding. Perhaps there is some additional, implicit point
you mean to make?


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