I have a planted 70g tank thats been up for about three weeks. There were fish in it but they have been removed to a hospital tank due to Ich, so as of now its just the plants and some snails. I keep seeing these tiny little "worms" for lack of a better description, that are between 2-4mm long and seem to be about the width of a human hair. They are always trying to swim toward the surface where they are then pushed back down by the current. Sorry no pics they are just too small. Any ideas what they could be? Do I need to be concerned? Thanks
Kyle
Kyle