https://www.growweedeasy.com/curling-or-clawing-cannabis-leaves
check all those out... doesn't look like the bad stuff, but as i scrolled down i figured you'd be able to see it better, lol. your pH looks fine in diary. 3mL/L is normal dose? if you've done that from beginning, definitely dial back a bit as soil has some in it to start, and watch how it reacts.
been hot and windy lately too?