I dont see any heat stress. I think your temps are ok, not the optimal but ok. 85 isnt dangerously high temp yet, but you dont wanna go much over it. Hope you get your ph-meter quick! At some point you need to get them in to bigger pots.

Good luck for your grow. You have a nice looking setup there :thumbsup:.
What strain are they?
JohnnyRico Reviewed by JohnnyRico on . first grow ever closet 450w setup first grow ever. Could use some help. I'm having some discoloration and yellowing issues. All came from local dispensary as clones. Under 450watt MH, temps stay between 80-85 throughout the day (working on getting this lower) I have been watering tap water every 2 days just enough to moisten the soil. Using Fox Farms Ocean Forest organic potting soil with worm castings and bat guano. Terra Vega nutes, but haven't started feeding yet. Just plain tap. The setup: Rating: 5