hey guys , my leaves are burnt

One of the thing could be water droplets on the leaves and light will make burn spots trough droplets, or your ph is going off ,on some photo I checked your leaves are claving of too much nitro ,you overfeed with N.

Even the most professional pens will need to be calibrated. My pen is always spot on when calibrating. But this last time it went out of calibration between calibrations. First time in 2 years.

Dutch passion write that there may be a lot of magnesium, but i use calmag (biobizz) 1 ml / l

I have the most professional pen, the ph its 6.2 -6.4 always

https://dutch-passion.com/en/blog/a-visual-guide-to-cannabis-deficiencies-n987 This could help you.

Looks like the start of a PH imbalance. Make sure your pen is calibrated.