dump 3/4 of that solution, backfill to 6.2 with pH'd cool water and daWg...don't even measure that EC again until they root
clonex is heavy on hormones, you can recut, reapply or both if desired but youd be resetting your rooting clock
patience is key here... i had a cut of cadillac rainbowz that took me 6 weeks to root the first one, she was sassy. most my cuts take ~10 days for real root mass to begin forming, not just an adv. root. youll learn the best length, location relative to node, amount of hormone, and ph/ec/temp for a particular individual over time. chances are, you got one of those wrong and that is to be expected until you are familiar with it
you could take off some of the bottom foliage but that is arguable in aerocloners...idk, maybe for hygiene you could make the argument?