Weird, thin, white worm in fish tank?
Okay, so today at Pet Smart I got a dwarf frog...as soon as I put him in the tank, these thin, small worms started swimming around. Like, literally right after I put him in the tank. They're about the size of a finger nail, and as thin as a hair. Any help would be appreciated. I don't want the rest of my fish to die! I just recovered my tank from snails...now this??!