Plants that are showing buds are getting a bit more phosphorous and plants that are behind and not showing are getting a bit more potassium. Watering once a day by hand. PH 6.0, Cal Mag to 03 EC, nutrients brought up to 1.2. Runoff PH 5.9, EC 1.0 & 1.1. Still tying branches down with florist tape and safety pins, seems to keep a level canopy. Keeping temp of canopy under 25 degrees. Added another 4 X 4 tray and another light, so running four 4 X 4 trays with 3 spider farmers on a light rail and 1 stationary spider farmer.
Looks like issues in the root zone. Test your runoff. I would bet the ph is in the 4.5-5 range. This will affect the uptake of nutrients the plants need in flower.
Thanks Kush-queen, DoctorGreenThumb, and StaresAtPlants for your answers. Seems like the leaves come from both top and middle of plant. Run off is 5.4, 5.5, & 5.7 for the different trays. PH going in is 6.0. Plants get watered with RO water every night, I run 6.0 PH, temp 23 EC between 05 - 1 or 500 - 1000. Get plenty of runoff.