white cysts?

[foster200]

I have a blue-green chromis with what looks like white cycsts on his dorsal fin. I could not get a picture, but it looks roughly 3 times the size of an ich spot. there are about 5 of them closely grouped together. any ideas? thanks so much

 

[RegalAngel]

I have a blue-green chromis with what looks like white cycsts on his dorsal fin. I could not get a picture, but it looks roughly 3 times the size of an ich spot. there are about 5 of them closely grouped together. any ideas? thanks so much

History of this fish? Was it newly introduced to the aquarium recently?
Or has it been in the tank for some time and no other fishes introduced?

ie what changed with respect to fishes and this tank.

 

[foster200]

I had an ich / brooklynella breakout. All the fish were removed and put into my QT. I have been treating it with copper and ruby reef (rally) for 8 weeks. They are still there. Not sure how to get rid of it.

 

[RegalAngel]

I had an ich / brooklynella breakout. All the fish were removed and put into my QT. I have been treating it with copper and ruby reef (rally) for 8 weeks. They are still there. Not sure how to get rid of it.

4 weeks is sufficient for Ich. Need to test for Cu and verify 0.5 ppm.