help needed - another problem

hi, i have another problem (first problem: https://www.rollitup.org/marijuana-plant-problems/201955-help-needed.html)

can you take a look at these pics:

Spotting, if its not still an insect problem is usually a result of wrong PH. Looks pretty toasty tho could be nute burn too. Check the pics on this page >
http://www.ganjaguerrilla.net/index.htm Some in the nute burn section look just like yours.

Nutrient burn,what you useing acid.