Looks like signs of nutrient lockout and over-watering. You're overthinking it, which easy to do when you're new to this. I personally would ditch the distiller, just use tap water for now. Put the water in a res to let the chlorine evaporate overnight and use that to make up your nutrient mix. What are you using nutrient wise? Typically nutrients for soil don't need to be pH'd as you're not feeding the plant directly, you're feeding the bacteria. If you are adjusting the pH it needs to be in the 6.5-7 range for soil. When it comes to watering, seeing the size of those pots I probably wouldn't water them for at least a week! That or when they're light to pick up is a good guide to go by in my experience.So I'm trying to right this ship (by doing less). I corrected the ph by switching to tap water, gave it a good flush until run off was clear. Let them dry out then watered again yesterday. The leaf situation is just not getting better although growth has gotten somewhat better since oh correction. I pruned the dead leaves but every day there are more.
I'm not sure what is meant by PPM schedule. Do you mean nutes? Thanks
I would do a fresh nutrient mix using tap water that's been left over night. Get the nute mix at 6.5-7 pH range. Depending on what nutes you're using I would also check the EC (if you're using organic nutes skip this). Do a thorough flush through and do not touch them for at least 5-7 days. Those pots are absolutely massive, there should be no need to feed them again for a long time.