CO2 enrichment earlier in life

[Chickenhead7]

And someone here mentioned that co2 will always increase your temps. This might be true if you're using a co2 generator, but if you're using bottled co2 from a tank than that's simply not the case. Only reason why your room temp would increase while using bottled co2 would be if your climate controller turns off your exhaust fan while the co2 is in the room.

No offense but this part you said above isnt exactly right....the reason your temps go up is because the gas Co2 absorbs heat energy when light hits it and doesnt release it all back, which increases the temperature of the air that the Co2 is in....not because your exhaust doesnt turn on. The fact that your exhaust doesnt turn will be the reason that the hot air isnt leaving the room, its not the reason the temperature went up in the first place. Whether the Co2 is bottled or not, Co2 will make temperatures go up.

Co2 when it actually comes out of the bottle is kinda cold compared to a Co2 burner which burns propane or natural gas which then releases the hot byproduct of Co2.

So the Co2 coming out a bottle is cold, and the Co2 coming out of the burner is already hot (which is why I would never recomend a Co2 burner unless you use it as a sort of heater cause it so damn cold hwere you are), regardless tho Co2 will cause the room temperature to rise due to the fact that the Co2 gas molecule absorbs heat when light hits it and doesnt release that heat back, it sort of holds on to it, causing the room temperature to go up.

On top of all of this, why would you ever want to have to turn on your exhaust fan on when you have Co2 in the room?....you would just be ehxausting all the Co2 your putting in the room right back outside, making pointless to have brought the Co2 in in the first place.

Thats why I said you should control your temps to where you dont use enough Co2 to make the temperatures rise enough to where the exhaust fans have to come on.

[/QUOTE]And some things to keep in mind about using co2; your humidity will probably rise due to a higher transpiration rate. So make sure you're able to keep that in check. And your plants WILL drink/eat faster if you're using the co2 correctly and have your room dialed in. So make sure your method of feeding is able to keep up with the increased rate of growth.

Hope this helps.[/QUOTE]

Ill agree with this part though and the first thing you said about Co2 in veg not increasing yield later on if you only use it for veg. The Co2 simply promotes growth of plant material, whether this be leaves, branches, or flowers.

When you first turn the Co2 on though, its going to be very dry humidity wise compared to the air in the room. For the most part when first putting Co2 in the room the humidity will probably at first drop....but yeah then followed by higher transpiration rates because the plants are using more of the food they created during photosynthesis when they "breath" during respiration because of the higher amounts of Co2 in the air, overall causing the humidity to rise.

Btw Im not trying to start an arguement, just thought we would trade some information.

[johnnyballbag]

Hmm...i actually didn't say you'd want your exhaust fan on while your air is enriched with co2. Shouldn't your climate controller turn off your exhaust fan when co2 is in your room? I mean i might not know much about automation and controllers and such... A lot of controllers have thermostats and/or humdistats that control an exhaust fan, so your fan should be off while co2 is in your room, assuming your parameters are correct, which i think i emphasized.

And like it was stated, ambient co2 levels are "around 300ppm." I usually add 1500ppm to that, giving me 1800ppm. Not once have i ever noticed an increase in my room temp that i could attribute to a 1500ppm increase in co2 (i'm pretty OCD about my room parameters, and actually i may have lied; i know a thing or a hundred about controllers, i build my own due to my OCD tendencies ). Do you really think that an increase that small is going to increase your temps? And i'm not arguing either, just good 'ole fashioned debating.

[Chickenhead7]

Hmm...i actually didn't say you'd want your exhaust fan on while your air is enriched with co2. Shouldn't your climate controller turn off your exhaust fan when co2 is in your room? I mean i might not know much about automation and controllers and such... A lot of controllers have thermostats and/or humdistats that control an exhaust fan, so your fan should be off while co2 is in your room, assuming your parameters are correct, which i think i emphasized.

Lol we are saying the same thing with this.

[/QUOTE] And like it was stated, ambient co2 levels are "around 300ppm." I usually add 1500ppm to that, giving me 1800ppm. Not once have i ever noticed an increase in my room temp that i could attribute to a 1500ppm increase in co2 (i'm pretty OCD about my room parameters, and actually i may have lied; i know a thing or a hundred about controllers, i build my own due to my OCD tendencies ). Do you really think that an increase that small is going to increase your temps? And i'm not arguing either, just good 'ole fashioned debating.[/QUOTE]

I believe it all depends, I am being a too tight on the fact that Co2 absorbs heat from light. I have had it go both ways...maybe I should have just said that too much Co2 will raise your temperature.

A level of 1500ppm I dont think is going to raise the temp much your right, maybe 1 degree or two....I add Co2 at where levels should be around 16-1700 and I dont see much of an increase either, maybe 3 degrees max.

One time I was growing in a tent and accidently turned the valve all the way open and the tent was constantly being flooded with Co2, needless to say the temps were in the high 90's in the tent when prior to installing the Co2 the temps never went much above 85. It stayed like that until I found out the knob for the valve was turned all the way up....after the tank was empty after only 3 days lol. I have no clue what the ppms were but probably way over 1500.

You are right tho, when I dial in the room size and set the valve to where it will be releasing enough Co2 to set the ppms around 1500 I dont see much of an increase in temperature either....I was being a too strict on that one.

[johnnyballbag]

Haha, its all good bro. See what we're sayin IamStoned? CO2 can be quite the lil bitch. The best advice i can give on making the jump to using co2 is to worry about your climate first. Get that dialed in, and you could set up a simple bottle system, regulator and timer (or monitor, which i strongly recommend) in a matter of minutes. But overlook one thing, and you'll either not see enough benefit from the gas to validate using it, or you'll run into problems, basically biting off more than you can chew. (like not having a control res for a hydro system and finding out your water level got too low due to increased growth and transpiration.)

It's really not hard at all though, we're just trying to drive home the importance of having a proper climate. Make sure you have the means to maintain your temps and humidity, and it's easy street.

[IamStoned]

Thanks for all the replies! I think I will play with using CO2 in veg to see if I can add a few inches to my babies before I flower. CO2 while flowering sounds like a bitch of a job to tackle. Maybe in the winter :-)