what’s wrong

So a couple weeks ago I posted and I thought I figured it out ....my plant started getting burned tips and curling, kind of losing its nice green color. I checked the runoff ph and it was really acidic. I started flushing, I thought the plant was getting a little better so I cut off the tips...

Idk what’s wrong with my plant the ph is 6.5 no bugs idk wtf is going on someone please help me out I’m feeding grow big and big bloom rn. It have little holes the lights are led they don’t get hot so I don’t think it’s burning up. Idk what to do freaking out.