dry ice and plant growth.

[Plasticman]

Hi guys im new here. would placing small dry ice cubes around the plant help it grow? im assuming it would.

[JustAnotherRegularGuy]

I assume this would be done to increase CO2 levels? As long as you aren't freezing the plant I don't see where it would hurt, but I don't know if anyone has tried this to see if it would help on Salvia divinorum. You should get two plants, use dry ice on one and use the other as a control and see what kind of results you get...then let us all know!

JARG

[U_Wrang]

I would be concerned about the concentration of CO₂ reaching toxic levels inside a humidity tent.  Dry ice evaporates pretty fast, and being heavier than air, it will settle to the bottom and flush all the oxygen from the soil, too.
Your exhaled breath is 4-5% CO₂, so breathing on your plants a few times a day is a much safer bet!

[carnivorous4pie]

One thing you need to know though is that when Carbon Dioxide levels get too high the plants stomata close and this would slow down the growth rate but if the CO2 levels are a little bit higher then that's fine. Check my guide in Cultivation guides, Advanced techniques. I found out about the stomata closing recently after I made that guide. Another point is CO2 combining with water to form carbonic acid which isn't good!

[Baracs]

Don't forget plants are made of living cells too! They need oxygen! Its a common misconception that plants don't breath oxygen when in fact they do. CO2 is used in growth. I remember reading a study in which they isolated trees into bags and tested oxygen and CO2 levels. Only as the trees were growing did they consume more CO2 than oxygen. Full grown trees consume near equal amounts. So true you want more CO2, but flooding it with high amounts may also suffocate the cells, let alone poison them.

[apexifly]

Do not put the dry ice directly into the humidity chamber or near the plant.  Instead, allow the dry ice to vaporize in another container and direct the CO2 vapors into the chamber via tubings.  This way you will prevent any harm to the plant due to freezing. 

[darkshadow]

dont get cubes get the dry ice pellets and burry like 1 or 3 small pellets 2 inches under the dirt at the rim of your pot as far away from the plant as possible cause 4 or more has enough potency to blow up a 2 liter bottle and you dont need that much co2

[SalvinorinLighter]

You'd be better off getting a c02 tank/burner and running it that way. Dry Ice degrades rapidly at room temperature.

[black8teen]

Check this out. It is way safer and easier to control than dry ice for CO2 levels....

   http://www.salviasource.org/forum/cultivation/suppliment-carbon-dioxide-(compactcheap-style)/0/

I think just having the plants in an area where people live and breath should supplement them with more than enough CO2 to thrive. It has not been a problem yet as far as I have known about growing plants.

[Paradoxic]

I would be concerned about the concentration of CO₂ reaching toxic levels inside a humidity tent.  Dry ice evaporates pretty fast, and being heavier than air, it will settle to the bottom and flush all the oxygen from the soil, too.
Your exhaled breath is 4-5% CO₂, so breathing on your plants a few times a day is a much safer bet!

Yeah, I second that. CO2 is definitely toxic at high levels, its considered toxic to humans at only 0.5%. And I could see it getting really concentrated in a humidity tent really fast from even a small piece of dry ice (that pure, solid CO2).

[darkshadow]

what if you got co2 bottles and set it up to an open area at 1 shot a day at .001 second burst shot it would be plenty of co3 for alteast aday

[lightbearer]

my point of view on this is co2 supplementation is almost pointless unless you are running a room full of plants that will use a huge amount of co2 and need a constant supply. The method I would use for dry ice in that regard is blocks of it in slotted ziplock boxes placed strategically about the ceiling. A regulator/timer valve on a co2 would be more controllable, and I believe co2 generators are the most efficient, allbeit expensive, alternative...
but in the course of my studies, the only horticultural applications I have seen to require supplement co2 are commercial indoor farms, and clandestine marijuana grow rooms... If you are worried about your plant not getting enough air, simply acclimate it to the open air by removing the humidity tent for n+1 hour every day (where n is the previous days length of time) If at the beginning your plant exhibits extreme wilting mist it thouroughly. Always try and keep the tent off for the full time for that day, unless you really think your plant will die. Its tricky, sally will look trashed way before she actually is, but that doesn't mean she's invincible.
Anyway, Ima end this verbal diarrhea here by saying Good luck, and hope this was some use to you.

[darkshadow]

well on the ceiling would be pointless cause co2 is lighter than oxygen and would rise

[Hero4Evz]

That is not true. If you add a Carbon to a Oxygen molecule it would add weight to it. Oxygen is diatomic meaning it is 2 Oxygen molecules combined and to add a Carbon to make it Carobon Dioxide (one carbon 2 oxygen) obviously adds weight because when you have the same thing but one has something else there is and addition of weight added.

[Plasticman]

yea carbon dioxide is a lot heavier than oxygen. what made you think otherwise?