M
Moonlight dank
The photos above look like a mixture of heat stress and neut burn with possible infestation /ph deficiency , also if you are using a lot of pesticides that could be landing on your top soil and then when you water it .you could end up feeding the plant pesticides causing excess burning from the inside out,if you buy a bad soil they often come crawling with life store brought bulk compost I avoid at all costs for this reason ,coco is a cleaner alternative, I would put them on healthy feed nothing to strong ,rizotonic a and b (base neuts )and a trace mineral mix to help revive them , remember with neuts sometimes less is more under certain circumstances ,switch to Co Co if using low grade soils,the only pesticides product I know for a fact works is called Dr schimel comes in a little silver bottle that stuff works fact one time ap.a good clean of the whole room and everything in it .once cleaned everything clean equipment room etc use Dr schimel to spray all equip and room leave for an hour then wash all insecticide from pots trays etc so no uptake ,this is if starting from scratch ,for the ones in the photos increase airflow ,bulb quality osram Phillips etc ,check ph . switch to cleanest availble growing medium coco ,use a revive type feeding schedule to help bring them back ,give the pesticides a rest for a few days wile revive them see if that helps ,if not use Dr schimel spray after a week of nursing them and increasing general life quality in order to help the immune system strenthen ,being carful to spray everywhere under leaves on top of leaves stems etc but not on top of soil as it ends up going into your plant wich you do not want obviously spray during lights out to avoid burn,if you can't get rid it could be something your doing bringing them in threw bad soil quality for example back track and go over your routine eliminating all possibilities of somthing your doing to bring them in .doing that increasing life quality, revive them ,clean up .check ph and try using the Dr schimel carefully after a break while you revive them is about all I can come up with hope this helps