I had setup a hospital tank to tryand save a clown fish with velvet. I used a tank i was trying to culture pods in. The pods experiment did not work. I washed the tank out and set it up for the clown. I doesed copper. The clown died two days later. I didnt get a chance to clean the tank before we left for a 6 day trip. I came home and noticed these little guys swimming about. They are white. The pods i was trying to grow where not this big. I did feed the clown some frozen brine shrimp. I did not use any display water. There is no heat or water circulation or air in this tank. I will try to get a better photo. My phone is not focusing well.