4th week sour OG flower

Mr.budz

Active Member
I just started week 4 of flower today, but for about two weeks now I've noticed my ladies leaflets that are on the flowers are curling. Been trying to research what it is, but didn't find much on how to fix it. I read it was the plant perspiring too much, which can also be said is due to humidity, but my humidity is steady at 35-45. The pic I'm posting is not of my plant but it's exatctly the same


my set up: DWC, PH 5.7-5.9, water temp 68 deg Farn., room temp 69 deg, 1000 watt hps, inline duct fan, no heat even if I touch my cool tube, ppm 1200-1500, air stones,

so what the heck can make my leaves like this?
 
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