your temps are a bit high, try to get that lower if you can, have you been checking the temp in the buckets?? keep those roots nice and cool, and make sure you have an air gap under the pots, last tip check your ph everyday in your buckets, it will drift on you over night. other wise you will be really happy cause the grow looks great. when you grow dwc it is real nice, and you will have a huge harvest when its time, happy growing