Okay, I'm really not sure if my smallest hatchet tetra is acting "weird" or not, but I've sure never witnessed my larger hatchet tetras swimming like that... It was swimming around letting the current created by my filters push it around, and it would swim in loops, like Dori in Finding Nemo, going upside down and all, so I put it in a breeder net to keep it more contained and protected somewhat from the current, and now it seems to be acting fine. Also, my Betta appears to be on the verge of fin rot, with a slightly tattered tail. I'm going in tomorrow to get my water tested at the Petsmart I'm working at, but I was wondering if anybody has any ideas of illness in my tank, or if there is a general "fix all" that I could add to the water to make sure nobody is sick. My betta has been separated out into a smaller tank, and I'm starting to treat it with "Betta Fix" which has worked well in previous cases of fin rot. Any suggestions would be welcome, I'm definately an amateur! 
