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Old 12-25-2013, 05:34 PM   #11
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Thanks for your responses! So mr x your saying keep water good and it should sort itself out? Worth buying a uv light? And worth lower salinity?
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Old 12-25-2013, 05:55 PM   #12
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Ich?

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Originally Posted by mr_X View Post
Fish can most certainly fight off ich under the right circumstances. Stress is what lowers their immune systems and then you see the parasite take hold. I have never QT'd any fish and many of them had ich when they were introduced, and all fish made full recoveries, except for one Achilles tang. When I tell you I had a lot of fish in the years I've been doing this, I'm talking hundreds. These fish were sold on a regular basis, so I didn't keep them for very long, but I put them in a system that was connected to my main display.

Changing tanks/coming from the LFS to your tank, ammonia levels/poor parameters, bullying, and undersized tanks are mainly what starts it. Without these factors present, you won't have a problem with ich, even if it's in your display.

Well said. A fish can get infested, especially the gills, where you need to intervene by hospitalizing the fish, but that in itself creates stress. Ich can only attach if the fish's slime coat gets too thin (the fish's main line of defense). Stress can cause this thinning and in my view is the main cause of most disease. Surgeonfish have a already thin slime coat and as a result get Ich easier than many other fish. In a proper environment Ich doesn't have a chance. Proof is the lack of fish with the parasite on the natural reef. I haven't seen Ich in 20 years in my system and I really don't QT most of the time.
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Old 12-25-2013, 07:11 PM   #13
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Too some extent i agree but i cant personally put it down to only a stress related disorder where healthy fish cant be effected. I find it hard to believe a fish can fight off a physical parasite such as ich with their slime coat alone. In big tanks yes they have a better chance of avoiding large numbers of spores than those in a smaller tank. In comparison to bacterial infections ich can be one of those exceptions where even healthy fish can easily become over whelmed.

But to contridict what ive just said i remember experiencing it with new fish and the resident fish definitely seemed to have less spots than the carrying new additions so i have to agree that a healthy fish can indeed fight against ich to an extent.
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Old 12-27-2013, 02:00 PM   #14
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I honestly would just treat them in qt and leave the tank empty for 8 or so weeks. I just did this with my 120 gallon. I've had this one sailfin tang for 6 or so months and his ich always comes back. The slightest things stress the fish and it comes back. The slightest temp change it comes back, slightest ph change it comes back, I got tired of one week all the fish are completely free of ich then the next week some are covered in it again. And yes I had fish that always stayed clear because they were plenty healthy but I lost numerous fish that could never fight it off no matter how well I kept up with water quality and temps and all that. In my opinion keeping fish healthy to fight it off doesn't work that well and I'm just going to qt everything for 4-6 weeks every time I get something. But that's just my thoughts

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Old 12-27-2013, 02:05 PM   #15
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The spot on my tang is now gone, it would seem that it was just stress. Thank you all.
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Old 12-27-2013, 02:13 PM   #16
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Well thats what we like to hear, good news.
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Old 12-27-2013, 02:46 PM   #17
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The spot on my tang is now gone, it would seem that it was just stress. Thank you all.
The spots from ich can come and go rather quickly. If you put rock from an infested tank into your new tank there is a very real probability that the 120g has ich in it as well.
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Old 12-27-2013, 04:57 PM   #18
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Quote:
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I find it hard to believe a fish can fight off a physical parasite such as ich with their slime coat alone.
Going by the amount of ich cases in this hobby, you would see piles of dead, ich infested fish on the shorelines of every country if they couldn't recover from it. Who's QT'ing the fish in the ocean?






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In big tanks yes they have a better chance of avoiding large numbers of spores than those in a smaller tank.
It's not because they can dodge tomites in larger tanks, it's because generally, larger tanks are less stressful.
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Old 12-27-2013, 05:23 PM   #19
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Going by the amount of ich cases in this hobby, you would see piles of dead, ich infested fish on the shorelines of every country if they couldn't recover from it. Who's QT'ing the fish in the ocean?

Itq's not because they can dodge tomites in larger tanks, it's because generally, larger tanks are less stressful.
Respectfully no you wouldn't see huge numbers of infected fish dead on the shorelines because rivers, lakes or the ocean arnt confinded rectangular shaped glass tanks, there's balance. Fish contracting ich in the wild will be hit by afew spores or 'tomites'which would be an incovenience yes but only an irritation. My other post stated a stressed fish with a thinned out slime coat would have a harder job but my statement remains that healthy fish in confined spaces can sucumbb to ich infestation aswell.
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Old 12-27-2013, 05:32 PM   #20
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Their numbers will continue to increase in open water, because there is no QT, or major predator to keep them in check. 1 turns into 50, 50 turns into 2500, and so on since the beginning of ich. I don't understand what you mean by balance. If you are referring to the sheer size of the ocean, then eventually, there will be plenty of ich parasites for every fish. It's just a matter of time. Just like it is in a small tank.
Have you ever seen a single dead fish on a shore with ich spots all over? I haven't. The majority of folks in this hobby have seen ich at least once. So, with those odds, don't you think we would at least see a single fish in our lifetime, infected in the wild?

They are not healthy fish for long if they are in a confined space IMO.
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