1100-1450ppm Co2.
that is correct..... but with co2 you want to run higher temps so it speeds up the metabolism of the plants so can they uptake the higher levels of co2.IMO opinion if your running lower than 80F your not getting the full potential of the co2. i run my flower room at 84F-88F and plants love it with the co2. you can run co2 from seedlings to day of harvest. as far as RH, no higher than 40% in flower when buds are present or the obvious mold comes into concern.