help brownipe leaves

superbeast1219

Active Member
bubleponics
ph 5.8-6.1
400w hps
foxfarm tiger bloom 1245ppm
room temp around mid 70s

can some please point me in the right direction with whats going on with my lower sets of leaves. All the lower leaves have brouwn tips and curl downward.I am in the 4 week of flowering.I will try and post a pic with i figure out how thank you
 
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