can you kill a plant with co2

[oldsanclem]

normal background outside air ,with a good flow is about 300 ppm.
That is one way to check you meter out, do not do it inside as theres a build up of co2 from humans and other critters.

oldsanclem Reviewed by oldsanclem on 07-07-2007. can you kill a plant with co2 just need to clarify a fact so my buddy isint misled Rating: 5