Any ideas?

[Chrisb4452]

Just wondering what could be causing my issues here. Have 2 sappy sour x2s here 17 days into flower with 2 45 watt full spectrum led grow bulbs. Getting alot of the bottoms leaves just turning yellow and dying off. A few of the kolas have yellow tips on the very top sets of leaves not under though. I also have some other stuff going on with some of the leaves. Pics included one at a time so you can zoom first is the entire plant second the kola with yellow tips third will be one of the sick leaves.

 

[Chrisb4452]

 

[Chrisb4452]

 

[Chrisb4452]

 

[improvise]

Hello the tips of leaves burning like that sign off early nutrient burn, this is excellent reading Cannabis Plant and Pest Problem Solver - Pictorial regards

 

[Chrisb4452]

Well i am at the stage in flowering where i removed my "gtow" nutrient from the solution and am only using a very little bit of a nitrogen boost per my feeding chart. Which is aurora soul line "soul feeding schedule". Im mostly concerned about what im seeing on that leaf