Couple comments-
1) your grow store is full of beans; moms are fine under flouros and so is your checkbook.
2) likely culprit= salt toxicity and pH fuckulation leading to multiple nutrient lockout with burning.
Everyone who said FLUSH is right on.

My own suggestions/advice:
1) Flush
2) Time for some cannazyme or hygrozyme to alleviate all the crap that occurs when a plant has been in the same pot too long... dead old root matter taking up space and locking up available carbon, etc.
3) If you can repot in even slightly larger pots your plants will thank you
4) Personally I see no need to keep largish mothers; you should consider cloning yourself a bunch of replacements for them, then repotting the moms in big pots, and flowering them as bush monsters.
Just my several cents.
It is going to be tough to get good clones off those moms anyways while they are stressed with the salt thing.