parasites

[gregcull]

I have a 55 gallon tank. I got it from a friend with a brittlele star, a lobster, 4 damsels, and a small sea urchin. I added a mushroom and a soft coral. 3 damsels died, the urchin died and the other damsel is sick but is eating and seems to be doing better. Last night I found small white living oranisms all over the glass. Is this bad? Help!!!

 

[Salty Dog]

What do the parasites look like?

 

[SquishyFish]

How old is the tank? If its a relatively young tank, my guess would be either pods or Hydroid Jellies.

Check out the pic at the top of this page...
http://www.reef-aquarium.net/resources/livestock/critters/hydroids.html

Is that what you saw?

Squishy

 

[gregcull]

They look like paramecium hopping around the glass.