Since yesterday morning, at least I noticed it at that point, the leafes of the #1 are looking a bit odd, can anybody tell what could be the problem or whether there even is any?
Looks like it wants some Magnesium and maybe is overwatered or under.
Limp Leaves + Stiff Stems = Over
Limp Leaves + Limp Stems = Under
Purple stems and yellowing of the leaves like that is tell tail Mg defencity. epsom salts are easy and cheep source of Mg
https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg
Good Luck!