Co2 question

yes its safe. dangerous levels are 30000ppm. what kind of system are you using?? ppm reader i hope...
 
i use a propane generator and a normal size propane tank last me about 2 weeks at steady 1400ppm
 
I have a 20 pound tank with a full room controller, But I just built the room and have not
set it up get. I have the toys but just finishing the toy box..... thanks for the help!
 
I think you would reach the level that kills your plants long before the level that is seriously harmful to you unless it went up very quickly.
 
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