Critical Kush day 4 of 12/12.

I have two in hempy buckets and one in dwc.

I have an issue with the dwc girl. I posted a pic yesterday of one of the lower leaves today I noticed a few of the lower leaves not brown like that just sort of limp and curled under like reverse taco. My ph pen broke a few days ago and I have been going by drops, my eyes aren't great and really the ph could be anything from 5.5-6.5. I hope my new pen arrives soon.

considering its only in your DWC it's probably something regarding pH

Its either ph or lack of light to lower leaves. I wouldn't be too concerned, just try to stay ontop of your ph in the meantime.