A C02 idea, what do you think?

Hi, i just spent the past hour reading through a thread on a home made C02 setup and i have come up with an idea to utilize the yeast method and turn it in to a timed release setup.
Ok so ive not done any research or experimenting with this so it only theory at the moment, but i believe this could work.

The reason i thought of this was that the amount of air that is replaced by the extractor fans is insane and i don't see the benefit of just slowly releasing the C02 as it would be pulled straight up and out of the room
My plan is to have two of these setups in my grow maybe to vent at the same time maybe have one release in the morning or start of light cycle then the other halfway through the light cycle.
Please ask any questions and i'll do my best to explain.

sounds like an idea thats all I can say

the best yeast method I like is just make wine lol sounds funny but the wine method releases just as much co2 but at the end instead of being left with sugar water you get a big bucket of wine mmmmmmm