Co2???!!!! Bs!!!

I am so sick of trying to get actual numbers for co2!!! I have seen like 5 different estimates based on an 8'x12'x7'h area on how long a tank, 20lbs, would last. The calculators go anywhere from 154 hours to 3 days at 12 hours days with enrichment to 1500ppm...What is the deal man???? I just want to figure out how long tanks will really last and all the bs aside like no way to tell bs is driving me crazy.. How many plants, how sealed it is all bs.. Just how fricking long will a tank last with around 30 plants in a sealed area like this>>>?????! Propane? Tank(s)? twin regs? water chiller for propane water cooled? New dehumidifier if using propane to keep humidity down? I just want to increase the co2 from 300 to 1500 in the grow around 3 to 5 times per lights on cycle.. Don't want to keep it all the time there but I know that would be best???! how much best or better I don't know either.. I just figure if you, as one calculator said, enrich to 1500 3-5 times in 12 hours a tank will last but others have said they won't last but a very short time! What is the real deal?????????!! Does anyone know?????? I know that if you use co2 with small plants they will not have to grow to monsters to make a huge cola of bud so it is the best way to go but it is so hard to know what system will work? I mean this aint cheap to start and I don't want to fuck this up... If anyone, ANYONE, can tell me the skinny once and for all please, PLEASE, help..... I will wash your fucking car and kiss your monkey if you can give me a straight, right answer..... Thanks.... Will be forever in your dept...

If you don't have to worry about heat I think the propane burner is the more economical choice. The usage won't be constant from place to place so I believe that us the cause for the disparity in the suggested usage times. I've been using the co2 boost bucket for a while now.. it works good for a small grow. No more than 1000 watts. It lasts for about 100 days for about $100.00 in my 4x4 tent.

My space is a little bigger than yours. I spray 3 times a day during the 12 hour light period and a 20 lb. CO2 tank lasts me around 3 weeks.

For CO2 your best bang for you buck will come from a CO2 generator. You never want your generator to run more than 10 mins (heat becomes an issue and so does using up all the Oxygen in your room). A room of your size would need something in the 3000-6000 BTU per hour (i.e. something with 3 to 6 burners). You want something that can generate 3-6 cu/ft CO2 per hour. If you have something with 6 cu/ft of CO2 per hour you'd only run your setup 8 mins every 2-3 hours and that should generate enough CO2 for your daily needs. With a 20 gal propane tank you should get 360 hours of use. However since you'd be running it for 8 mins at a time for 4 times a day (when the lights are on) it should last a really really long ass time.

i don't mean to kill this man but before you get everything in growroom perfectly dialed and are getting max yileds consistently you will not reap the benefits of CO2. add to it that you need more lumens/sq.ft to benefit from it. room has to be perfectly sealed.

Well it is not perfectly sealed but It will be.. I get a huge vacuum when the filter is running and I open the door so pretty much air tight now but a little caulk and it will be sealed.. I am wondering if you don't keep the co2 all the time at 1500 if your results will be as good as the grow I saw that answered the small plants put to flower finally, that I saw in this one grow. Pretty much no side limbs or popcorn crap and just single arm sized limited leaves colas of perfection and from what I have done I think it can't be done without lots of extra co2 added. Wonder if raising it up 3 to 5 times in twelve hours, considering the plants uptake would make it work that way... Want to end the forest type grows. I have all the rest dialed in so that is not an issue.. I got the nutes down, the humidity, the air/rez temps all thing just right and make huge colas but like I said they are in a forest with way to much trimming necessary. The other way I would get same colas no forrest.. Thanks... Only concern with the propane is the heat in the summer, but withwater cooled units don't think that is an issue but then you have the water put into the air issue so another, better, dehumid unit and I think a water chiller so tanks seem less expensive to start and less crap to buy.. so ok thanks for advice guys.....

zem said:

i don't mean to kill this man but before you get everything in growroom perfectly dialed and are getting max yileds consistently you will not reap the benefits of CO2. add to it that you need more lumens/sq.ft to benefit from it. room has to be perfectly sealed.

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For the sealed rooms I run CO2 during lights on @ 1500ppm.

20lbs tanks typically last 1 month.

I have the walls sealed to the concrete slabs so it is as close to air tight as I can get them.

Edit: The difference between CO2 and non-CO2, running same wattage and nute schedule and environment is huge.

I always wondered why some pics show such great huge colas with almost no popcorn/side branches and one after another all perfect and it is because of co2. No other explaination! I have grown huge plants and they have made great colas but like I said they are huge and with lots of branches and fan leaves. The age old question to trim the fan leaves or not flys out the window with 1500ppm of co2. You can trim them up to a stick and leave almost just the bud leaves on the main stem and they will make a huge cola with all the sides free to make another and another and another increaseing your plants and yields without the popcorn harvest trimming nightmare.. I think it is the only way to fly actually.. Want to be sure though that a tank will last and or if to get those great results the ppms must stay constant at 1500 or can you get the results with just bringing it up to 1500 4 or 5 times a day and not use a moniter. meaning once you test and find how long it takes to bring it up to 1500 and then set your flow to that time on and how many times on will it still give those great results and if not and the unit has to run more then how much real time will you get out or a 20lb tank.. The propane units make heat, they make tons of humidity and if you get a water cooled one you get rid of the heat but have to have a rez and a chiller I am guessing?! Then you must have a very decent dehumid unit and my ac/dehumid all in one does a shity job for the humidity so another unit there too and all things considered a lot more space taken up with hardware... Just would like to use the tanks but really don't know if they will last??? Read somewhere they would last 3 days and well that spooked me.. Thought I could get 3 to 4 weeks but still don't know what is right... At $15 a refill and at 3-4 weeks a 20lb tank would be the best I would think only if I can get the right answer as to how really long one would last.. Thanks...

R2F said:

For the sealed rooms I run CO2 during lights on @ 1500ppm.

20lbs tanks typically last 1 month.

I have the walls sealed to the concrete slabs so it is as close to air tight as I can get them.

Edit: The difference between CO2 and non-CO2, running same wattage and nute schedule and environment is huge.

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dude watever you do don't cut the fan leaves lmao

I used to agree and still do if of course you don't have co2. With 1500ppm of co2 you can work magic with out the side crap and all the giant fan leaves.. Seen it done very very well and I know the truth now about all the forrest of fans and side branches. Don't need em if you got it going on.. Seen lollipop forearm sized giant colas with almost no fans or side branches and nope it can't be done without the extra co2. Grown big plants and tried small trimmed like the ones I saw and no co2. Big ones did great but not like they would have with co2 and the trimmed ones did shit.. Just the way it is my friend. You can trim em at about 3 weeks into flower into single stem colas and that is after you start them at only around 4 inches tall in flower... So anyone else??>

zem said:

dude watever you do don't cut the fan leaves lmao

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im gonna have to agree... cutting off branches and lower growth to "lollipop" the plants and focus on the main cola is an acceptable practice. If you're cutting fan leaves to get more light on the buds you're retarded. There is absolutley nothing detrimental about having big fan leaves to utlilize all that extra Co2. That's how plants grow. Unless you have some special plant that performs photosynthesis more effectivley with the little bud leaves rather than the fan leaves like every other cannabis plant in the world. It's a good thing you're there to help the plant grow properly.. Mother nature is a real fuck up with all the fan leaves she thinks the plant needs eh?

tatamama said:

Seen it done very very well and I know the truth now about all the forrest of fans and side branches. Don't need em if you got it going on.. Seen lollipop forearm sized giant colas with almost no fans or side branches and nope it can't be done without the extra co2. Grown big plants and tried small trimmed like the ones I saw and no co2. Big ones did great but not like they would have with co2 and the trimmed ones did shit.. Just the way it is my friend. You can trim em at about 3 weeks into flower into single stem colas and that is after you start them at only around 4 inches tall in flower... So anyone else??>

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I'd like to point out that you "saw" this done.. you've never "done it" the plants will perform better with 1500ppm of Co2, thats a given. They would do even better with all the fan leaves. Why aren't there any really knowledgable growers who suggest cutting away fan leaves? Why don't any seed breeders suggest cutting fans??

You're wrong about this one. Let it go. Big plants with Co2 are even better than small ones. large plants grown with Co2 get HUGE colas. even bigger than a little SOG grow of lollipops will.

tatamama said:

I used to agree and still do if of course you don't have co2. With 1500ppm of co2 you can work magic with out the side crap and all the giant fan leaves.. Seen it done very very well and I know the truth now about all the forrest of fans and side branches. Don't need em if you got it going on.. Seen lollipop forearm sized giant colas with almost no fans or side branches and nope it can't be done without the extra co2. Grown big plants and tried small trimmed like the ones I saw and no co2. Big ones did great but not like they would have with co2 and the trimmed ones did shit.. Just the way it is my friend. You can trim em at about 3 weeks into flower into single stem colas and that is after you start them at only around 4 inches tall in flower... So anyone else??>

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this is Bull Shit! you step on my nerves with it man! you say you KNOW THE TRUTH! LMAO that's a joke. so you discovered the truth? like the secret of CO2? the truth is that the fan leaves are the solar panels of a plant with which they use light energy. and using CO2 you actually need more lumens per area to get the benefits therefore you wold need every fan leaf there! i can easily say that you will not benefit anything from CO2 if you apply it at this point. CO2 enrichment should be applied after you have EVERYTHING in room dialed, and due to your lack of knowlege i am sure you still have a long way to go before you could realy benefit from CO2...

OP, I know someone said that their's last 30 days, and it's not that I'm doubting them at all as I have never seen their setup, but from my gatherings and experiance, 10-14 days for that size room is the norm. If you are running out before 10 days, you probably have a big leak somewhere, if you get more than 14 days out of it, then hurray for you, lol.

That 50 bucks a month in co2 is so worth it. 15%-20% yeild increase when properly setup seems to also be "the norm."

So in your case, is roughly 100-200 bucks worth of co2 per grow worth 15%-20% more?

Uh, fuck yeah it is, lol.

haha oh dr. ganja ( tatamama) you should know all of this if you were a master grower. you make me laugh

You do realize that yeast gives off Carbon Dioxide right?

If you don't want to mess with yeast.


Co2 Cultivators

additionally, trimming off fan leaves, DECREASES bud production. sorry its a botanical fact. you need energy to creat bud, and leaves are what supply that energy through photosynthesis. buds do undergo photosynthesis, but not even close to as much as fan leaves do.

I think we have a "know it all, wannabe jorge"

Here is a pic of what I think of fan leaves. Can you tell I what I think? Now that I have shown you what I think I will tell you with very limited fans and very few branches you can make huge single colas with very little forrest to deal with.. The forrest here will show you how much work I have to go through without much trimming to get good yields without added co2. I could cut 2/3rds of that jungle out and get even more yield done with constant 1500 ppm lights on. So if you think I don't have a clue look at my forrest bubba. That grow was 4+ weeks from cut and made almost three lbs in a 7'x8'x8' area so I think I have a clue... I don't need all that yield but what I need less of is 2 weeks of trimming at 3 hours a day...

You could use all the stations in that pics grow with co2 and not have a nightmare of fans.. You could get most of what I got with less than 1/4 of the follage.. That is the whole point.. Wonder if I left it like this and used the co2 what it would look like at harvest.. Budzilla???

ElectricPineapple said:

additionally, trimming off fan leaves, DECREASES bud production. sorry its a botanical fact. you need energy to creat bud, and leaves are what supply that energy through photosynthesis. buds do undergo photosynthesis, but not even close to as much as fan leaves do.

I think we have a "know it all, wannabe jorge"

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So if you burn for co2 with a generator what effect does the co have? It is a poison so don't you have to get it out and if you vent it out u lose the co2 as well so I don't get how people use the burners without making to much monoxide (co) and making a toxic air situation. If you use tanks and you keep it constant at 1500ppm co2 how much more growth will you get as opposed to just adding up to 1500ppm 5 times every 12 hour light cycle? Not sure then if the 20lb tank will last any time at all...

with 7x8 space you can yield like 100oz easily without any CO2, with 3Kw light. thats double what you got(3lbs). with good skills you could do 200oz. and with CO2 maybe 400oz but not by cutting off the fan leaves thats all we're sayin. if you want to cut off lower branches with their fan leaves to allow bigger top colas thats fine but you can't go cutting the big fans on the sides and expect the bud to grow to its max with only CO2. and to be able to do this using CO2 you would need like 6Kw in there and a big amount of CO2. we're only trying to help