CO2 Purity (fwd)

---------- Forwarded message ----------
Date: Fri, 18 Oct 96 13:00:22 UT
From: Jamie Howton <jhowton at msn_com>
To: Aquatic-Plants-Owner at ActWin_com
Subject: CO2 Purity

Hello all

I have read all of the FAQ's, but have not seen this addressed specifically.  
I want to use a CO2 fire extinguisher as a tank for a CO2 injection system 
that I am setting up.  Does anyone know if the CO2 used in fire extinguishers 
is of sufficient purity to be used for aquatic purposes?

Thanks in advance

Jamie Howton