Leaf Wilting

Anyone have an opinion on what this may be caused by? This is a DWC setup. About 16 days into flower and certain leaves are wilting in this way. I am thinking maybe over fert? Not sure. They are fed floronova bloom at 1 teaspoon per gallon of water. I only give 2 gallons of feed and 2 gallons of regular water. 4 total gallons and that gets changed evry week sometimes 2 weeks at the most. The ph is at 6 and the temps are around 78-80 sometimes if it gets hot outside they may go up to 85. 30% humidity also. Also how do these flowers look for 16 days? This is my first hydro grow. Thanks

 

Sorry! IU should have put this thread into the sick plants section. If it could be moved that would be great. To much time in the garden today. Sorry again!