please help

attached are pics. All of this strain is doing this. its not bugs (i dont think). I think it is some nute problem, but i do not know what. Any help is appreciated.

View attachment 1679435

hope this helps

I thinking nutrient toxicity other wised know as nutrient burn

Whats your dirt & nutrients you been using?

tips are curling up, def burn

That plant looks taller than the others, is it too close to light?

im using advanced nutrients sensi bloom part A and B, big bud, voodoo juice and bud candy. I have been using this formula for a while with good results. Thanks for the info, i thought it was a defeciency, but thanks for diagnosing nute burn. I will flush today.