Sick leaves tips turning up and brown need help

[Bay707]

Soil is 50/50 vermicite and happy frog f/f
Strain is CBD star
Planted on 9/13.
Aglex 400 true ways cob And led mix. 30 “ from top in veg mode so only cobs on and getting about 300 par.
General hydroponic nuts.
Temp stays around 84 humidity 45-55
5 gallon pots
I was think mabye nut burn, light,burn. I only fed her once at a .25 strength.

 

[Bay707]

I have a picture on my page for my set up Nd light

 

[Bay707]

Sorry 50/50 pumice stone and ffhf

 

[Bay707]

Wat ever is going on it’s starting move the plants started at the third set now working on second.