Ok so I've got 9 plants and 6 are sick. 7 are bag seed, one is a girl scout cookie and one is a trans siberian auto. The siberian seems to be getting the worst of the damage and Id like to get it resolved before it goes into flowering. I thought it Might've been a calcium deficiency so I got cal mag to add in with my fertilizer but I don't think the damage had stopped. I used it yesterday morning but maybe it hasn't had time? Either way the problem is that the bottom leafs are drying up and falling off. It's not just old growth it's happened to new leafs as well. The tips have yellow speckles as well. The damage has spread to the middle of the siberian. Ots upward growth has almost haulted but it keeps getting bushier. If any of you all can help I really need it. They're in half coco half perlite in 3 gallon fabric pots under 1000w led. I water every other day and fertilize every other watering using half strength fox farm trio. The first picture is the girl scout, the second is the trans siberian and the third is the bag seed.