Is that big box fan blowing straight on 'em, as well as the fans on the other side? What are your temps like? They really don't look that bad to me. I can see a couple bigger fan leaves kind of laying a little low, but nothing looks like it's wilting or really being super droopy. Sometimes as a plant grows and if the ventilation isn't adequate it can increase the humidity in the space, which can cause some droopiness. I just experienced that in one of my rooms. It gets SUPER hot in there and is tough to cool off. My girl won't let me get an AC for the house.... grrrr