I've been battling what I believe to be an ich outbreak in my eel tank since Christmas. Nitrates a bit high (working on that), all other parameters good. So far I've treated with the following:
- Kick Ich (~3 weeks)
- generic methylene blue/formalin treatment (~10 days)
- SeaChem Paraguard (into third week now).
Just prior to/immediately after switching to the Paraguard I lost several fish (porcupine puffer, blue reef chromis, lawnmower blenny, Klein's butterfly), which I attribute at least partially to the generic treatment being ineffective. The snowflake moray has shown no sign, but the scribbled rabbitfish has been symptomatic throughout, and the humu trigger is now showing signs. I have dropped the salinity to about 1.02, and have been doing 20% water changes about every other day for the past couple of weeks. Photos are posted below.
Although the tank is a FOWLR, I have wanted to keep the option of adding some algae-eating inverts (especially since the rabbitfish doesn't seem to like what's growing in the tank) so I'm reluctant to use copper. At the same time, I don't want to lose any more fish, and I think my 10-gallon frag/QT tank is too small to treat the rabbitfish in.
SO - am I mis-diagnosing this and treating for the wrong ailment? Is there any other effective, non-copper-based treatment I can use that leaves open the option for inverts in the future? For the longer term, how much would a UV sterilizer be effective in preventing these types of disease outbreaks?Thanks!