Can you Use Dry Ice for Carbon Dioxide?

i was wondering if u could use dry ice for carbon dioxide. i can easily by it at the grocery store. i dont no if it would drop the temp or not. just thought i would run this by you guys.

Yes I've read that you can, but I've also read that in the long run, it would be far more expensive than running co2 from a small tank.

Found this here : http://www.420magazine.com/forums/how-grow-marijuana/72135-can-i-use-dry-ice-provide-co2-my-plants.html

Can I use dry ice to provide CO2 for my plants?
You can do this, but it is extremely difficult to regulate the sublimation of CO2 in an easy way. The cost of replacing the co2 every few days will rapidly mount up as it does disappear quickly once outside a freezer, and pretty quickly even inside a freezer.

Plus too much CO2 will kill your plants. It's hard to control the sublimation rate of dry ice, so you have no way of regulating the atmospheric content.

In short - don’t bother! If you really want co2 enrichment then buy a bottle and a regulator.

ya it seems like in the long run it would be cheaper to just by a tank. Thanks guys!

Yeah no problem, I'm thinking of getting some co2 equipment myself..if you end up picking something up, pm me with your co2 setup, I'd love to see/hear it

rsharp said:

i was wondering if u could use dry ice for carbon dioxide. i can easily by it at the grocery store. i dont no if it would drop the temp or not. just thought i would run this by you guys.

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yes you can, but i wouldnt recommend it. the only thing that will have dramatic effect is co2 tanks or generator. and you still even want a control unit to measure the ppm which should be 1500-2000 if im not mistaking. otherwise it's a waste of time imo. but it certainly wont hurt your plants and can only make them better. it's jsut you may not notice