Irish Auto Lemon

Generally, cannabis plants prefer temperatures in the 70-85 °F (20-30 °C) range during the day when lights are on. I do not see any issues with your plants they look healthy to me, watch getting water or nutrients directly on your leaves during lights on, you may want to try a bit less water, also the humidity at 20% is super low, young plants, seedlings, and clones like higher levels between 55%/70% - Try a little less water, get Humidity up - and Temps Down a bit. You are doing great!