High temp with co2... What's too high?

So the setup is 400 hps and 250mh in a cool tube with 435 cfm fan sealed from room, and tent is sealed the best I can. Night cycle temps stay at 80 or above while during day cycle temps reach up to 99. Dehumidifer keeps room at 40% humidity. I have an intake and exhaust fan that vents the room 2x during day cycle, and a 20lb co2 tank filling room once every 3 hours during day cycle (timer set to fill after room vents). I've used a few of the glass co2 bulbs to test levels through out intervals with levels dropping to about 1000 ppm before each co2 refill.

So far the plants don't seem to be showing stress and are growing well. Plants are about 2 weeks into flowering and starting to show flowers. Medium is perlite vermiculite in hempy bucket.

Thanks in advance

 

My question is, do I need to be worried or should I be ok if temps don't get above the 98 99 mark....