Google hydroids and see if they match up to what what you are seeing.
Most of the reading I have done says they just kind of disappear after a while. Mostly the issue of them appearing are in new tanks.
Google hydroids and see if they match up to what what you are seeing.
Most of the reading I have done says they just kind of disappear after a while. Mostly the issue of them appearing are in new tanks.
John
"Critics are men who watch a battle from a high place and then come down and shoot the survivors." Ernest Hemingway