ah yes, one of the reasons I sometimes enjoy mornings on over here is that I can catch so many of you before your supper or having an evening session, always kind of a fun reminder of the big globe turning. Isn't it a joy to think of all the fun we little earth insects get to have before the whole whirling bunch of rocks turn to stardust some day, sigh.
Anyway, back to the fun at hand.. Yes, I follow you and what you point out and quote makes sense.
OK, so even if you and I were really good plant biochemists, there'd be some value in an exercise where we attempt to move slightly away from the "chemistry-speak" lets say, if you follow me, for both ourselves and the beginners here, and I'm wondering if we have a feeling for whether the easycarbo or excel could be thought of as supplying:
1) Just the carbons that eventually are turned into the plant's sugar, both its stored sugar like sucrose, and perhaps some into its active sugar like glucose.. but in general into energy storage/food via sugars.. ie, we are "fueling/feeding" the plant in a big way, with the raw materials it uses every day to grow and do all the things it does... OR
2) (only slight difference) The carbons begin supplied are potentially doing "both" the "fueling/feeding" of carbons that will be turned into sugars, AND, maybe a small supply of atoms that the plant will use to build RuBisCO itself, since plants need relatively (compared to other enzymes) lots of RuBisCO. (Am assuming RuBisCO itself has carbon in it but can't actually remember or find it at the moment, though.)
I'm just belaboring this a bit as besides my own curiosity, I'm thinking that the odd beginner reading this might have his/her curiosity peaked about this amazing enzyme, RuBisCO, that is often called the link between "rocks and life itself" in the sense that:
On one side we have all this carbon, locked up in bicarbonate minerals, carbon dioxide gas and other things. Then, inside all those chloroplasts, in all that greenery all over earth, sits this big ball of an enzyme, the most abundant enzyme on earth, and it takes this "lifeless" carbon and "re-constructs" it into "organic" molecules that form the basis of life on earth! One could almost stop and take a moment of meditation on this

.
Here's an example of some paragraphs that repeat what I'm saying:
RuBisCO!
(just maybe fun for beginners, I know you already know this stuff Aaron! but my question is still up there...)
~~waterdrop~~