Your PH has been fluctuating significantly from the rust colors running in the center of the leaves stepping up the leaf, I'm going to say that your VPD is out, you need to get your Temp and Humidity in check, I would treat the bugs with 3% peroxide give them a good spray top and bottom of the leaves, download Tent buddy, adjust your VPD with the app, once your VPD is check keep watering with adjusted PH water and things should start to spring back...If your don't get your VPD in check things are going toget worse