After a slow start, these girls are beginning to hit their stride. I increased PPFD to 440 and adjusted temp to 71F and RH to 50%, for a VPD of 1.2, which is great. First week of nutrients (1/4 strength) and they responded well. I used a 1 liter medical squirt wash bottle to feed approximately 100 mL/plant. I was worried about this grow since they started off so slow compared to my auto Gorilla Glue, but this is my first grow so maybe they are right where they are supposed to be.