Spots, deficiency? To much?


#1

Without an info sheet, ph or ppm , strain, anything can you tell what these spots are, seem to devolope in hours and sometimes makes the leafs crisp…but its scatered not on every leaf and same on top as bottom…dont seem to effect alot but iam not sure and iam flushing just in case…nutes nftg 3/4 strength…I will do a detail sheet later jusf wondering if anyone might know right off hand


#2

#3

Without any additional information or seeing them in natural light, I’d say calcium deficiency caused by inaccurate ph.