Problem in Week4-5 of flower

Cubes15128

Well-Known Member
Hey guys so this plant is end of week 4 in flower and it's got some problems I think. some upper fan leaves started dropping a bit and turning yellow. Some spots on other leaves too, cal deff? The purple edges on the leaves have been like that for 2 or 3 weeks. Thought it was probably just genetic. Runoff is 6.4. Using AN nutes GMB and banana manna. Under 100w of cobs, temps are 70-76f 40-55rh. Any help appreciated :bigjoint:
 

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