Impossible to answer this definitively, so experienced opinions solicited .....
1. Ran an overstocked 90 for 8 months with two large Hippos amongst the fish population. On two occasions they showed ich-like symptoms, but quickly went away with no spread to other fish. So I assumed it was not ich.
2. Had a purple tang, along with a few other fish, in my observation tank show early ich symptoms. Removed fish to hospital tank where it got a bad case, treated with cupramine. Observed other fish for 12 weeks with no symptoms at all. Purple went through 4 weeks of copper, then 8 weeks of observation ; asymptomatic.
3. Upgraded 90 to a 265, re homed one of the Hippos, and moved all fish into the new tank. After about 10 days both the purple and the remaining hippo showed a few spots, but they disappeared quickly with no reappearance now for a further 6 days. So I assumed it was not ich.
So I guess my question is, does my tank have ich in the system but because my fish are well fed and healthy they have an immunity? Or am I just paranoid? One of the main reasons I went to a bigger tank is that I'd like again to keep an Achilles Tang.
1. Ran an overstocked 90 for 8 months with two large Hippos amongst the fish population. On two occasions they showed ich-like symptoms, but quickly went away with no spread to other fish. So I assumed it was not ich.
2. Had a purple tang, along with a few other fish, in my observation tank show early ich symptoms. Removed fish to hospital tank where it got a bad case, treated with cupramine. Observed other fish for 12 weeks with no symptoms at all. Purple went through 4 weeks of copper, then 8 weeks of observation ; asymptomatic.
3. Upgraded 90 to a 265, re homed one of the Hippos, and moved all fish into the new tank. After about 10 days both the purple and the remaining hippo showed a few spots, but they disappeared quickly with no reappearance now for a further 6 days. So I assumed it was not ich.
So I guess my question is, does my tank have ich in the system but because my fish are well fed and healthy they have an immunity? Or am I just paranoid? One of the main reasons I went to a bigger tank is that I'd like again to keep an Achilles Tang.