Possible CO2 issue?

[3PL]

Lets say for example you usually do a set amount of plants in a room, once it's time to 12/12 PPM of CO2 is at 1800, always has been in the past, never an issue.... until now ?

now lets say that set amount of plants that you usually do is cut in half, I'm going to assume that the CO2 level's is to high for the girls yes ? can anyone confirm ?

Thanks in advance.

 

[cannabeans]

anything over 1000ppms

i have noticed more problems when i would keep my ppms that high. i lowered them to approx 1000ppms while the lights are on and have NOT had any stress issues...but if the plants dont think its to much, go for it...