I had worries about potential drainage issues and indeed it seems like I have them. I ended up having signs of overwatering on #1. Nothing much to show on #2. No nutrients yet.
Experimented a bit with 24 hour light schedule but decided against it to encourage root growth so that I can transplant it to a fabric pot.
@gottagrowsometime, thanks, what makes you think that my pH is low, the droopy leaves?
My plan was to only give nutrients every few waterings, so when I water tomorrow I'll water with around ~7 pH, should normalize hopefully. I'll pH test the mixture with biogrow now.
edit: the pH on the water-nutrient mixture looks good actually, 6.5ish.