Bubba 2.5 Big quontum hydro 3Pound?

Day 50 last day of the dense nut the pm is at 5.8 and the ppm is at 270 all looking good put a ac in there today will run with light on for next week or so Day 51 first day of flush!!! Ppm at 50 ph at 6.0 I found other top flower with bud rot on the big plant this time humidity is to high in there 60% now don't have a dehumidifier and it's lot of wet days this week any tips to lower it with out one just more air moving? Day 55 I think it is done I'm going to gave it lots of cold from the ac and tern light out Earley tonight and cut tomorrow im thinking 🤔 Note the smell of the small plant in the back is bark purple and smells tropical so good where the other 2 smell like dank skunk and gas ⛽ so strange