Nute burn ?

You do know your plants are pollinated and you have a hermie so will be seeds in the buds thats why your struggling sorry they all need chop and start again with fresh seeds happy growing

Seems more like nute deficiency instead of nute burn. Gonna check online but I think phosphorus or calcium?

Hi there. You want to be at en Ec of 1.2/1.3 for autoflowers in coco. Your 4ml/L of the coco A and B will be way to strong. Use water with ph 6.0 and give the plant a real good soaking until you get plenty of runoff. Then next watering use nutes at 1/4 strength, plenty of runoff again. Keep that up for a few week then increase to 1/2 strength nutes. Also try and use a cal mag supplement next grow.

Hi 420GrowTent, Well i took a look at your diary and you have this light green leafs for a really long time now. When i took a look, i can only gues, i see you are using a lightmix soil? If so, most of them hold like 1.1-1.3 EC which is good in the early stage but later on you need to have higher EC meaning more nutrients. To me you needed more (N) early on and more (P) later on. Your Temperature, Hum and PH on your diary looks fine to me. Also your distance from plant to lamp is enough. In my country we like to say measuring is knowing(sounds nice in my language haha) meaning that it would be a good idea to check on your run-off. Flush it a little bit, catch up leaking water from the pot and measure it. If it has like 1-1.4 EC then you know that you have been underfeeding for sure. At your stage and size of the plants you should be on like 1.6-1.8 EC at least. Also, how long does she takes to drink up all of the water you give her? if it is more then 2-3days you know that she has a hard time drinking it up and you might have been shutting her down with giving her to much water at once or you have somehow been overfeeding her, But the last thing i doubt because when seeing your diary, you don't use many kinds of nutrients nor are you feeding lots of basic nutrients. Good luck growing :)