BUMP!!!!!!!!!!!!!!!!!!
i need to know how to use this c02
I know 1500 ppm in the grow room air is good. You have a fucking giant room so I don't know how long that tank will last.
I have no idea how to calculate the co2 release, but know it is most effective during lights on, don't need it at night as the plants aren't working hard.
I have seen the equation many times here on rollitup. You just need to search for it.
Oh, and if your exhuast for the room is running all the time during light on, the co2 will not stay in the room, you will just be wasting it. So when you do figure it out, you will need to time things so that the exhuast is off for an hour or so while you release the co2 to the right level. When the exhaust comes back on it will just cycle all the air out anyways taking all the supplementary co2 with it. So try to get it shut down and release co2 maybe 3 or 4 times a day.
Also co2 is heavier than air so you should try to figure out someway of releasing it up high and letting it fall. Some sort of air-netting would be good for this as your plants are pretty spread out.
So yeah... it's kinda complicated.