phosphorus deficiency ? or

ok this problem started back a month ago started noticeing my leafs turning yellow then brownish color and wilting and dieing off ,started at the bottom now dureing 4 week into flowering ,its spreaded to bud sites up top , turned very top of one site brownish color and wilted pretty fast any idea's? attached a pic of leaf color

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Looks to like a combination of deficiencies tbh

What are you feeding them, how old are they etc etc, details would help a lot etc

well so far only gave it miracle gro all purpose ,and started it bk in april so couple months old, also added little epson around the base of it thinking at first it was a cal mag def, but as time went on i noticed it was pretty rapid