first grow

Hi that may take a while if you were very wet with the washing ;-) no worries in a few days everything is normal again :-)

It's not uncommon for the girls to sag when they are watered heavily. I don't see any issues just let that medium dry out before watering again. And for that size plant about 2 or 3 shot glasses of water at the stem is good. Force that Taproot down before out. Cheers and happy growing!

if any lower leaves have necrosis, Fe def Zn def, since i didn't mention which before. starts at top, from in-to-out on leaf. A slightly more acidic soil will help with both Fe and Zn without changing anything else, too.

Looks like zinc, but check pH first. that's more often a cause of trace element issues. If you use RO water, switch to tap. That may fix the problem with the trace elements too. (some exceptions for hard water > 300ppm)