Hey there! Cool looking setup!
You might want to consider having that top feed start beneath the RapidRooter. The RapidRooter can hold moisture and sometimes cause droopiness in plants, almost similar to being overwatered. Also, the yellow margins/edges on your plant look a bit strange. I don't know if that's new growth or an indication of something else. Someone here might know more about the yellowing.
Good luck with the grow!!