Richard Sexton wrote:
In article ,
Altum wrote:
wrote:
http://www.publish.csiro.au/paper/PP9790499.htm

Regards,
Tom Barr
Ugh. I'm a scientist and I can't even read that abstract. English, please?

I took it to mean "plants will take carbon out of carbonate" which anybody whose
read the 30 year old Dupla book knows. They just quantified it.

I got that far, and like you, I've known about biogenic decalcificaton
for a long time. pH crashed quite a few tanks with it. LOL! That's
what got me to try CO2 the first time. I got tired of spiking the
planted tanks with baking soda to put the carbonates and buffering back.

What I couldn't figure out was whether the plant prefers carbonate to
CO2. I wasn't sure how to interpret "The total resistance to bicarbonate
uptake appears to be 8-12 times that for CO2 uptake presumably due to
the processes of active uptake, transport and/or conversion to CO2
involved in bicarbonate but not CO2 assimilation"

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