Hello everyone,
I have a 60-gallon tank with 11 juvenile fish. Salinity is 35 ppt, NO3 around 20, and PO4 around 0.25.
I don’t run a quarantine tank because I don’t have the space or access to medications.
Over time, all my fish have become quite skittish — I thought maybe I was just scaring them. A few days ago, my yellow wrasse started scratching against the sand and rocks repeatedly (about 10 times in a row). I had just installed a new internal skimmer that produced a lot of microbubbles, so I thought that might be the cause. The wrasse has also had white spots visible only under blue lights since the beginning.
Then suddenly, my Flameback angel started hiding and stopped eating, even though he used to be the boss of the tank and ate the most. I also noticed a nasty wound on my Tomini tang that has now healed. Since the beginning, my Flameback and Tomini have been fighting quite a bit — the tang often had small marks, but they always healed quickly, and the two seemed to finally tolerate each other. I suspect aggression might be an issue.
Yesterday, I noticed that my Sleeper Banded Goby developed a hole-like wound on its head, with a few marks near the fins and some irritated skin with small white hair-like growths near the mouth. The goby is still eating well but is very skittish and seems irritated.
Could this be a mechanical wound that got infected, or some kind of disease that caused tissue damage?
I’ve been in the marine hobby for about eight months, but honestly, I’m feeling really discouraged. I read about treatments like copper and PraziPro, but in eu, medications like that are banned, and my local fish stores say they don’t use any meds — only real live rock. So I can’t really use QT or copper treatments and need to belive in Paul B methods.
Do I just have to watch my fish suffer and wait for them to die? On the other hand, many fish die in QT as well, so it feels hopeless. I wish I had never started this tank — this hobby has so many unsolved problems, and it’s becoming really stressful.
What do you think is happening to my fish? I probably have multiple diseases like ich or flukes (and honestly, I think most tanks — even quarantined ones — have them). But do you think the Phalaena’s wound is something serious, or could it heal on its own?
Maybe my main issue is just aggression?

I have a 60-gallon tank with 11 juvenile fish. Salinity is 35 ppt, NO3 around 20, and PO4 around 0.25.
I don’t run a quarantine tank because I don’t have the space or access to medications.
Over time, all my fish have become quite skittish — I thought maybe I was just scaring them. A few days ago, my yellow wrasse started scratching against the sand and rocks repeatedly (about 10 times in a row). I had just installed a new internal skimmer that produced a lot of microbubbles, so I thought that might be the cause. The wrasse has also had white spots visible only under blue lights since the beginning.
Then suddenly, my Flameback angel started hiding and stopped eating, even though he used to be the boss of the tank and ate the most. I also noticed a nasty wound on my Tomini tang that has now healed. Since the beginning, my Flameback and Tomini have been fighting quite a bit — the tang often had small marks, but they always healed quickly, and the two seemed to finally tolerate each other. I suspect aggression might be an issue.
Yesterday, I noticed that my Sleeper Banded Goby developed a hole-like wound on its head, with a few marks near the fins and some irritated skin with small white hair-like growths near the mouth. The goby is still eating well but is very skittish and seems irritated.
Could this be a mechanical wound that got infected, or some kind of disease that caused tissue damage?
I’ve been in the marine hobby for about eight months, but honestly, I’m feeling really discouraged. I read about treatments like copper and PraziPro, but in eu, medications like that are banned, and my local fish stores say they don’t use any meds — only real live rock. So I can’t really use QT or copper treatments and need to belive in Paul B methods.
Do I just have to watch my fish suffer and wait for them to die? On the other hand, many fish die in QT as well, so it feels hopeless. I wish I had never started this tank — this hobby has so many unsolved problems, and it’s becoming really stressful.
What do you think is happening to my fish? I probably have multiple diseases like ich or flukes (and honestly, I think most tanks — even quarantined ones — have them). But do you think the Phalaena’s wound is something serious, or could it heal on its own?
Maybe my main issue is just aggression?

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