what kind of irrigation r u usin (hand water, aero,drip, ect),
def looks to me as not enough water/nutes, however b sure not 2 over do it on the nutes ,
THEY WILL B STRESSED 4 a bit ,so some TLC is needed
FYI
I once lost 3/4 of a harvest once because my pumps went out for like 12-14 hrs b4 i...