60x60 Critical SoG (first grow)

I have changed the order of the plants in the tent, so that the smaller, more leggier babies could get some direkt "sunlight". Plants grow very fast! They do not seem to bother or be "stunt" from the hight temperatures and my constant experiments with ventilation, grow lights etc. The leaves have some fight marks tho´ (foto) Some are still curling up and most of them have a bit of a yellow color. New leaves seem to look completely fine. I live in Spain, it is summer, hot outside and no air conditioning...during the day, temperatures in my flat do NOT fall under 28 Celcius. Thats why I turn the lights on in the night. It is the only way to keep the temp under 30 degrees C. There is not much DAY and NIGHT temperature difference tho´! Lights on - around 30 degrees Celcius Lights off - 27 - 29 degrees Celcius For veg still ok but we might walk into some trouble during flowering (what do you think?)!