Gorilla Glue Auto-flower

Am now being greeted with a sweet plant smell when opening the tent. I tried increasing light intensity but it was too soon for the little one that's 4 days behind and started showing light green spots after a few hours. Was also dealing with rising heat from brighter light. Noticed hardening of the lower stems during the first few days of week 3. Brewed a veg compost tea and gave 1/2gallon to each plant. Started LST on day 18, but then removed them because I was worried about the stems. They were so loose in the soil and were at like 50 deg angles. By day 20 they were showing very quick growth so I applied LST again. The largest one is stretching nicely, the other two are staying plump so I got one in a ponytail to give the lower growth more light.