UPDATE TIME!!!
Ok, so despite what I expected, my plants grew a lot while I was away. This defies my previous assumption that they grow faster when you watch/encourage them. Here are some observations:
Staurogyne repens: It has branched out, grown up, but most importantly, has grown longer leaves. Like RIDICULOUSLY long. I'm almost not even sure if it is staurogyne repens. The change is so significant that I am actually not sure if it is that or hygrophila polysperma or something. I'm not exaggerating in the least. It's crazy.
Ludwigia repens: It has grown upwards, branched out like the staurogyne repens, and grown larger leaves. Only one problem: some sort of deficiency. The new leaves, and some old ones, have little edges torn off, almost like something bit them off. I don't think it's fish though. I'm guessing potassium deficiency?
Rotala Rotundifolia: It grew substantially but isn't really coloring up obviously.
Cryptocoryne Undulata: Slow growth obviously, but also some new leaves are shooting up. It's doing well.
Cryptocoryne Parva: Shot up another new leaf. Looking good!
AR: New growth is pink, almost purple! Unfortunately its growing fairly slowly, the old leaves have a tiny bit of algae, but worst of all, have pinholes all over.
AR mini: It's really just sitting there, not doing much. A bit of algae but not anything major. A bit of die off on the old leaves but nothing major.
Baby vesuvius: Good growth. They're still small now but they are growing and putting off runners.
Tomorrow the S. Repens will get a trim.