lookin for the pics!
Yea soil 6.8 is the optimal pH for nutrient uptake. Once
You get below 6.2-6 in soil you will have lockout. It def is looking like a Nitrogen deficiency. Gotta get that Ph up before anything. Once you get the ph in range IDE say atleast 6.2-6.4 you could give them a small dose of veg nutes to see if it helps. A normal grown auto at there age would already be shooting pistils and have started flowering. They are stunted but it's not over yet. You can still pull a couple buds off these girls. Just gotta keep giving them TLC. Im about to send you a PM squid and then put the kids to bed and get to bed myself. If I don't hear from ya tonight I'll get back to
You tomorrow.