Reaper: A candle was also suggested by Indiana Gardener.
Ron: I have no idea.... but then again, at the moment, with flower scapes all over the place, I don't have any aphids. But I'm sure they will find my plants eventually! Let's see what Butch says.
nooooooooo, dont put me in the middle Ron is our CO2 guru...
Jim,
No.... but i can tell you how i would.
I would use a covered plastic storage container tote like those you find at walmart.
Drill one hole in it the size of a tire valve, insert a tire valve. Make another smaller hole on the opposite side, and stuff a cotton ball in it (exhaust side)
Then simply place the plants in the container, run a strip of ducktape around the lid and then fill with the CO2.
If you wanted you could place a small tea candle in the container as an oxygen indicator
This is just me pondering... Ive used these kits for their intended purpose and they did a great job. But, I dont see a reason why they shouldnt work in this application.
As long as you dont spray it directly on the plant at close range the temp drop shouldnt be significant. The max temperature drop (delta T) will occur at the point of vaporization ( and the greatest pressure drop in this case (delta P) (the nozzle itself))
(P1*V1)/T1=(P2*V2)/T2
If need be, just fill it slower to maintain an isothermal condition
Butch
Rob,Checked it out today and saw no signs of bugs and the plants looked fine too. I'll update as days pass.