They survived, but not without issues. One of the seedlings topped itself and had some strange leaf mutations -- probably a result of me stressing them in week one. Decent growth by the end of week two. Glad I didn't pitch these and start over.
I bumped my nutrient mix down to 1/3 strength as I got the hang of my EC pen and runoff was still measuring high (~2.7 EC). Bumped back up to half strength by the end of the week.