I run my light as low as I can in the beginning to try to get good node spacing and turn the light up once I’m done and they start to stretch to keep the nodes closer together on the actual colas. The strain actual has alot to do with how they grow too so it’s not a perfect technique but definitely helps
I grow with my lights full blast at the top of the tent. Also had to grow at 50% grams intensity and have had no issues so far. In fact this is the first time I have lowered my light about 1/2 the height of my tent.