Hello gang of greenthumbs I need some advice on co2!
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I only use it in veg and for the first 4 weeks of flowering… after that I don’t really see any benefit during the rest of flowering… 
What else would you like to know…?
Although I should ask you , are you in a sealed room with no air exchange…?
Thanks for the reply @peachfuzz in a well ventilated 4×4×7 veg tent w/400w mh and a 4 bulb t5 forget the wattage and a 8’×8’×8’ spare room with a 1000hps and 400hps also well ventilated both can be sealed to contain co2
If your able to bring in fresh air , then co2 is only added when you have more light then is needed and it usually doesn’t help after 4 to 6 weeks into flower… after that I think it’s just wasted money…
In veg is where I see the results of adding co2… my plants grow so vigorously that a major hair cut is in need before going into flower … that’s also when I get to take the best clones from all of the overgrowth…
I run a perpetual grow… so I need good healthy stock to keep the train running… 
@peachfuzz I appreciate the info I will give it a shot in the veg tent going to try a home contraption w/sugar n yeast before investing in a system I like the sound of yielding a $#!+ton of clones I too want to maintain a perpetual had it for quite a while til I foolishly accepted clones from a friend did not realize until it was to late f’n spidermites wiped out everything last spring never had them in about 20 years now I know better unfortunately I had nothing to start with until another buddy gifted me some beans now I’m starting to get there again fingers crossed and much more cautious
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That’s the tale of all of us at one point are another…
That’s why the best advice I can give to another grower … is never take clones from someone else… you will be doomed at some point or another…
No lie… and if you run a perpetual grow , then you know it takes up to a year to get back on track with a clean environment and good stock to breed…
@Garden_gnome I would love to tell you what I use for co2 … but unfortunately it’s to dangerous for a small operation… and you would need fire suppression just for this application…
But the grow bags and other co2 additives I’ve seen seem like a good safe idea for introducing co2…
Just not sure its necessary for just a couple of plants if you have fresh air exchange…
Jagermeister, grape ape, banana kush, gold leaf n mystery bag bean