Dry ice - Does anyone do this?

[NCDude]

YouTube - Flowering Marijuana With Dry Ice

 

[Lemon Paradise]

I haven't gone out and bought any,,, and I am dealing with heat issues, so turning off my fans for a couple of hours is out of the question,,

however, if I order stuff online,, like omaha steaks, they come packed in dry ice, and I do not waste it,, I just put in on a shelf in the room and let it evaporate...

 

[SnowBender]

From the local hydro crew...

This method works well for small areas, especially if some cooling effect is desired. Dry ice, solid carbon dioxide, is very cold about 109 degrees F below zero so we suggest you handle it with gloves. Dry ice is available through freezer and meat packing outlets and is relatively inexpensive. In our std. 8' X 8' X 8' room, you would need about 0.8 lbs. of dry ice per day to raise the atmospheric CO2 content to 1300 parts per million. If the growing area is quite warm, 0.8 lbs. can melt much faster than 18 hours.
Two methods can be used to regulate this.

One is to cut just small pieces, about .1 lb., and add a new piece every two hours to the growing area.

The second method is to put the required amount in an insulated styrofoam box with a few small holes cut in it. This will slow the rate of melting considerably but must be "tuned in" to get it just right so 0.8 lbs. melts in the 18 hours of light "on" time. Extra dry ice must be kept in a freezer to prevent loss due to evaporation. Since CO2 is heavier than air, one good method of distributing it to the plants is to attach the container or dry ice to the light reflectors which are normally placed over the plants. The CO2 will then flow down through or over the lights and evenly bathe the plants. If a circulation fan is used, the dry ice or its container should be placed directly in front or behind it for even distribution.

Common to all CO2 enrichment methods, try to seal up the room or greenhouse as best you can, especially around the bottoms of doors and walls.

The dry-ice method will cost around 60 cents per day for our standard sized, 512 cu. ft. grow room. A possible benefit of using dry ice is the cooling effect it produces.

 

[Microdocks]

good easy way to get more CO2 ......

 

[jungleworld]

I use the styrofoam box method it works great for me !

 

[cook420]

what about drying with dry ice anybody tried?

 

[Skippidy doda]

Lol, my mom did this back when she grew in the 80s with stolen street lamp lights... Ya it works, but be careful and remember that you cant breath hella CO2 so if you really cant afford an inline fan and some ducting running near the window then just apply in moderation.