What week are you in? I would be feeding epson only past week 4 or 5. Calcium is no longer needed, but magnesium and sulphur sure are! Could be locking out unnecessary calcium.
Could be mato.or could just be calcium difficiency that cannot not be rectified due to how bad the leaves are.
They would not recover now anyway.
They look like sun leaf anyway, just pull them off.
Could be locking out unnecessary calcium.
