Purple Queen DWC

💣Hi all grower friends, I am having little problems with my purple queen in dwc, I don't understand why the buds look like extreme foxtails, I checked my tent and there is no light loss, I thought it was revegetating. Changed the solution to the tank with osmosis water and added only 30ml of floraduo bloom and 10ml of remo cal mag to remove all the nitrogen, changed the timer from 12/12 to 10/14 but I notice these brown spots on the leaves and the leaf dries up and then falls off the plant, has anyone ever? Ph 5.7 ec 1.0 I have not over fertilized the plant I do not get to the top does anyone have any advice on this?💣