Slowly became bigger and bigger. Still healthy. Every third watering is with nutrients. In the pictures doesn't seen but the leafes are dark green. So I think it has nutrient excess. The temperature is high, but i can't do anything. I'm using more fan without success. Basically i'm set the timer on at the night, to keep down the temperature. During the day from 10am till 6pm everything is off. In the shadow outside the temperature is 33-35 °C, my plants ar in the cellar where the temp is about 24°C. So 27°C in the grow box is not so bad. Maybe the high RH is good for them.