I do not increase temps, humidity, nutrients, light, hamburger consumption, or anything else to accommodate my c02.
do people eat more food so that there oxygen can be tolerated?
plants grow to their weakest resource...which resource will you short your plants?
plants breathe it. when its hot they breathe more. when fed well they breathe more than when they are not fed properly. when its cold they need less resources...much like people. More oxygen is needed when running, eating compared to sleeping.
if the c02 ppm is not around 300-400 ppm during lights on the plant suffers because- it breathes this much.
correctly regulate temps, rh, lights, c02, nutrients, watering habits.... and plants will never complain. I did that some years ago
and found the end to every issue I ever read about here.