A water change will help improve what are probably poor conditions, but that bandaid won't fix your serious problem right now. You MUST put the fish into a quarantine tank and begin treating with copper, you simply haven't the time to wait for hyposalinity to do its thing. Garlic is
not a cure for ich, by any means.
reefnutz":2opgz564 said:
I've always been against medication and believe that simply just improving conditions in your tank and adding garlic will do the trick. It must be bad if a damsel died. I've never seen that before.
Medication for the animals we put at risk by our own inabilities is prudent care (obviously, after addressing what shortcomings in husbandry have allowed for the demonstration of disease causing pathogens). As for fish dying from ich, it's certainly been seen before, I sure have.
reefnutz":2opgz564 said:
Don't stress out your fish anymore than you have to. Next time, give garlic a try. It won't have any effect on the fish except for their sense of smell, and it will directly target ich which die from the presence of allicin in garlic. It's completely reef safe too.
Uumm...you're serious, aren't you? Please prove this claim. Allicin is proven as an antibiotic
only, not an antiprotozoal, so I don't follow the reasoning. It is entirely possible to improve poor conditions in a system without using garlic at all. Also, garlic can only do so much in a system already compromised, and there is no way it will cure outbreaks of ich. It does appear via empirical evidence that it may stimulate appetite in fishes, so if they're not feeding well, inclusion of garlic with more nutritious foods may be helpful. However, I will also say that, in my opinion, you'll reap far greater benefits by utilizing quality supplements like Selcon.
I know of TWO methods that are the only methods proven to cure ich, hyposalinity and copper (the latter is used at the LBAOP). There are those who use formalin, that is a very tricky substance (and caustic), and, to the best of my own knowledge its efficacy against ich isn't as well-proven as the previous two methods. I have read of it being used, IIRC
delbeek has offered up some information of how it's used at the aquarium he's associated with.
Freshwater dipping will
not work if the fish remain in the infected system. What really ought to be done is to set up a hospital system, remove ALL fish to it, and let the main display lie fallow for 6-8 weeks at about 80F-82F (to speed up the lifecycle of the protozoan). Treat the fish in the hospital tank using hyposalinity or copper. Ten gallons is insufficient for these fish unless they're all quite small. If they demonstrate secondary infections (usually bacterial), my preferred antibiotic is Spectrogram, also Melafix is good. You should have these on hand anyway.