CedzAquAddiction;899229 wrote: Let's keep in mind that ich is a parasite that normally comes in on an infected fish. That fish then infects the tank, and will then infest any other susceptible, stressed, or weak fish.
Garlic, metro, and focus are very useful tools, but don't actually kill the ich. Remember. The ich now infests your tank and not just one or two fish. What garlic metro, and focus do are they entice the fish to eat, and help medication get into the fish by making it stick to the food. This keeps the fish's appetite strong (thereby keeping the fish strong), and helps keeping them eating through the infestation. One of the first signs of infestation are the fish stop eating. The aforementioned helps remedy that part of the ich symptoms. Though very helpful, it is not a cure. The ich parasite still lives in the tank and eggs of future generations of ich are waiting to hatch...
Cleaner shrimp also don't eat the actual parasite as it spends a good amount of time under the skin, in the gills, etc... The ich parasite aggravates the skin of the fish which leaves dead skin behind. The cleaner shrimp relieves the fish by cleaning the irritated skin, and sometimes gills. It is more of a comfort than a cure. The ich parasite still lives in the tank and eggs of future generations of ich are waiting to hatch...
Ich lives and shows itself in cycles. Often times you will treat your fish, and think that you have gotten rid of the ich because the white spots are no longer showing on the fish. As the ich life-cycle repeats itself, the ich will show back up in a week or two. Sometimes it takes longer, but it will show.
To totally eradicate the virus from your tank, all fish must be removed from the tank, treated with copper or (even better) cuppramine for 30 days minimum, and the tank must sit fallow for a minimum of 8 weeks (I'd shoot for 10 to be sure). Look at it this way. With the tank sitting fallow for 10 weeks, your fish can be treated for ich for 30 days, and the rest of the time in QT can be used for observation to be sure they all are cured. Sure this will be stressful, but it will only be stressful for 2 months. Keep in mind that living with ich is stressful too...
I've seen many active tanks with ich, and the fish seemed to be thriving. I'm not saying they are wrong. They have definitely had better success than me at managing ich, and my hats are off to them as their experience yields them success at something that I've failed at many times. This is why I choose to totally eradicate it and QT any fish that ever enters my DT.
Keep in mind that the wrong fish at the wrong time, can cause a tank-wide outbreak that can affect all of your fish. Ich multiplies very quickly. An ich outbreak can stress your fish out more than a 2 month trip to a QT (or HT)...
Can you tell that I hate ich, and have had to learn my opponent in order to be able to outsmart it so it has a small chance of ever returning to my tank? It crashed my 120g and killed many fish very shortly after I set it up. It was my first tank, and taught me a hard lesson. There is always a chance of ich getting into your tank by other methods other than an infected fish, but minimizing the risk is normally worth the effort.
Best of luck, Man. Keep us posted...