Co2 output calculation?

Any idea on the amount or way to calculate the amount of Co2 that is produced during the fermentation process?

Sure, by back tracking.
If you can determine the amount of sugar and subsequently alcohol is in beer you can determine the amount of CO2. The formula of fermentation is C6H12O6 → 2 C2H5OH + 2 CO2. C6H12O6 is sugar, C2H5OH is ethanol, and CO2 is well CO2. So you know that for every two ethanol compounds produced you have two CO2s compounds produced.

Ill leave you to crunch the numbers.
***HINT*** Remember: CO2 and Ethanol do not weigh the same.

unfortunately its not exactly 100% conversion, but for every mole of glucose, there should be 2 moles of CO2 produced. 1 mole of glucose weighs 180g, 1 mole of CO2 weighs 44g

so assumming 100% conversion and 100% glucose, every lb of sugar makes about 0.5lb CO2, or if you want to go by points, then roughly every 40 total points would be 0.5lb CO2. if you meant volume, density of CO2 is about 2 kg/m3 so each lb glucose makes about 0.1m3 CO2

every lb of sugar makes about 0.5lb CO2

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That's what I am looking for. Thanks. Building a DIY Co2 generator. The tomatoes are going to love it.

Sadly, while your mind may love it, your tomatoes are not going to even notice it. The amount of CO2 that must be added to see noticeable gains is staggering!

Now my planted aquarium on the other hand....That is a different story.