Hashyanswered grow question 2y ago As organoman said that Radiator in the middle of the plants won't be helping at all. It's best to have the rad8ator in the room the tents in, I call that the lung room. Control the lung room and that will control the tent. I'm growing in soil in 8L fabric pots, my plants are further along then yours and I'm watering every 3-4 days with 2.5L water or feed. When they was your size it was more like every 3-5 days.