Whats going on?

[Darbex]

Another week and another discus going down. I came home today and I see one of my discus with a light gray mucus/slime all over it and it was laboring to breath. I QT him and another that has a small spot of the same thing and I treated them with Formalin. I also did a water change on the main tank and also treated with Formalin and turned on the UV filter. I read that this is probably a protozoan parasite. I have not added anything to the tank. I do water changes every other day of about 70%. The whole week they seem to have been doing really well. They were really bright and eating well. What could I be doing wrong that I am getting all of these issues with my discus? They seem to be coming fast.

[phish]

Brian,

Have you try doing small amount of WC, maybe its stressing them out trying to adjust to the condition every two days. I have no experience with discus but i do have a good friend that breeds discus in pearland. He's pretty close to your location, he goes by the name Hopper on here.

[Darbex]

Maybe but I know people that do 70% daily. But why would they be looking really well all week and now it happens. I did forget to mention that I actually missed my day of WC yesterday and was going to do it today. I do not see how one day could have caused such a deterioration in their health but I could be wrong.

[Mzungu]

I read that this is probably a protozoan parasite.

Where?

[Darbex]

http://www.pondsupply.com/fish_infections.html

Also on the bottle of Formalin

[Darbex]

Specifically Chilodonelliasis is what the signs point to