Not sure of this deficiency...

so I'm sure you'll be able to see it but I can't. 3 weeks into flower and this is what they look like. In FFOF soil fed light N Epsom salts and black strap mollasses every other feed for 2 weeks. The leaves seem to be fading inward and eventually drying at the tips. Strain in White Widow.

Please help before it gets worse. The issue seems to affect larger leaves, regardless of location on plant. Would this be form normal flowering behavior?? Any help is greatly appreciated.

no pic?

Under 300w led full spectrum. New growth is beautiful and green.

Didn't want to post apparently

looks like a potassium deficiency

Was thinking so myself. Easy way to fix this late in flowering??

if its potassium its probably because of ph too high, you need to flush and then water with ph water around 6.5

Oh is exactly 6.5 and that action has already been done about 4 days ago. I just added some compost tea of mollasses and bat guano (0-5-0) which should help, we will see.