HELP ME GK PLEASEEEE!!!
my grow has been execellent but now i got these spots please help! the dark single leaf seem to be jumping from leaf to leaf (non contact)

im in my last week of veg and am using Dutch Masters Advance along with their foliar program. some of the older fan leaves appear to be drooping but my lateral stems are very stout and able to support their new growth easily. the plants are growing like no tomrrow lush and very thick im using 10 gallon resev. (40 lts - constant drip) and just got my PH meter - befor tho my water PH was at 7.5 (thats the norm in LA) but i changed it at least every 5-6 days now that i have my meter ive got my PH down to like 5.9 all my parameters are per DM specs but that spotting is flippin me out

im trying s 1/3 dose of their potash product now thinking thats the problem. my co op is depending on me

thank you GK