Oh man, I am so busy, but I'm dying to put in some comments and help you out on your CO2 situation. You are right when it comes to me being a fucking encyclopedia on this shit. I don't think I've ever had a growing conversation in person where I didn't shoot over someones head at least twice in one sentence, LOL!
Hopefully tomorrow I'll have some time to put in a few paragraphs after work. I just work soooooo much and sleep soooo little.
But I'm going to set up a fat 8x8 flower room and juice the fuck out of it, with a 4x4 veg room and a 3x3 nursery.
One thing I can say about CO2 is to keep it monitored, don't calculate it on paper, it almost never comes out right. It is better to use solid walls and have the room relatively sealed up, using air intake as little as possible, if any at all. Keep the ppm's steady and always have a back up can of gas. Plants get "addicted" to CO2 and you do not want to deprive them, or funky shit happens and they slow wayyy down, and suddenly they can't handle the stronger nutrient feed they demand when on CO2.
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