HighTVanswered grow question 6 years ago Fantastic question jroc! You are absolutely on the right track that the plant is able to handle higher temperatures with an increased C02 ppm. However before you can increase the temperatures in the tent you should raise the RH, because the plants Vapor Pressure Deficit is pretty high right now. To put it simply - the plants are fighting to retain its moisture from the air and increasing the temperatures in the tent will make that harder for them! You will want your VPD to be between 8-11 as you enter into flowering (see link below for the VPD chart). To BEST utilize this extra boost the C02 gives your plants in terms of temperature resistance is to first get your RH to 60% to fix the VPD then increasing your light wattage. Any other increase in temperature that isn't in light wattage hurts your end result. I hope this helps with the question Jroc and sorry about the wall of text! 😇😇😇... https://hightimes.com/grow/understanding-vapor-pressure-deficit/