Autoflower co2

All fixes

I would NOT even consider CO2 for a first grow. Using it it implies you are pushing the plants HARD. You really need the right equipment, setup, experience and technique... again, not a beginner process. But, it's your grow do what you want. I would not expect your yield to offset the cost of the equipment and gas. Every "home" cheap CO2 generation system I've seen looks like a total waste of money. I'm a long time brewer and know the amount of CO2 produced by fermentation and that is not going to generate a useful amount unless you brew at the barrel level and even then you need to keep the active phase of fermentation going for weeks on end which is no easy task. Chemical reactions can also produce CO2 but again you need a lot to manufacture the amount of gas you need. To be effective you need a sealed environment so no vent fans to help control temperature. I also think you need compressed gas cylinders, a regulator and a CO2 gas monitor at the minimum for a manually operated system.

Hey, co2 growing is great. But you need top lights with a ppfd map that's 1500+. With the lights you have mars t600s you won't get there. I have an fc 3000 and I wouldn't even have enough to do co2 right. But if I added my 3x100 Watts with it I would. My point is you need an even 1500+ ppfd map that goes down a good few inches into your canopy. But with them upgraded lights you'll be able to get bud quality that I'm getting atm out of my current crop. If you do a negative seal pressure environment you'll higher your ambient co2 and it will help you get better bud as it'll draw out o2 while bringing in new o2 with co2 and your plant will use that. Lollipoppoing also will do you a real treat. Your 1st grow right? You will probably try bring every grain to harvest like me. DON'T. its a waste of time. Cut the shit and larf that autos are known for kicking out down on the lowest parts of the stems that are closest to the stem. Remove that. Look at my strawberry gorilla and you'll see what I mean. Good luck.

Unless you are growing in a closed/sealed system, using CO2 is largely a waste as most of it will be removed by your fan long before it is able to be used by the plants. If you are determined to use it, wait until they are growing strongly in veg and have at least 8-10 nodes.

Here's a good blahblahblah (video) on how to make that decision: https://www.google.com/search?client=firefox-b-1-d&q=at+what+stage+of+growth+do+you+use+c02+in+cannabis#kpvalbx=_dHTHYumfNvmpptQPkZahsAo15

I guess the flowering period is the most important but I add mine a couple weeks before I flip the lights and renew it three weeks into flower

I don't use it myself - can't afford to - but I should think you'd want to start as soon as the seeds have germinated... it, in essense, helps with photosynthesis which is what the plant is doing the moment it breaks ground... Good luck!