Deformed leaves, consistantly strange shaped leaves.

Hey all, first time medial grower here.
Iv had some strange shaped leaves recently. From what Iv read it seems to be due to low PH. Multiple strains all experiencing the same symptoms. Most seem to have recovered after adjusting the watering PH to ~6.2.
Just wanted to get some additional input for future reference.
Thanks yall, much love. Peace!

What type of medium; soil or hydro? Soilless, 50/50 peat and vermiculite.
What brand and type of soil? Black Gold Peat and coarse grade horticultural vermiculite
Indoors or outdoors? Indoors
What strain? Dosidos, Amnesia Haze, Silver Lemon Haze, and Sunset Sherbert
How old are the plants? Half are 2 months and half are 3 weeks
What type of lights and how many watts? Viparspectra PAR 600 (early veg) MarsHydro E8000 (late veg)
How far from the lights? 16-30"
What is your watering frequency and source of water? Every other day on average
What, how much and when was it fed? NPK? 12ml of Grow/Micro/Bloom per gallon
What is the medium/runoff pH and PPM if in hydro? Runoff is 5.8 PH and 1500PPM, feeding solution is 6.1-6.2 and ~850PPM
What are the temps and humidity in the room? Temp is 72-79 F, humidity is 50-60%
What size pots? 6" pots to start and 2 gallon pots for later stages
Any bugs? Look real close. No bugs that I can tell. I have a Takmily 50-1000x WiFi Scope
Any other pertinent info? Not that I am aware of...