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Old 10-16-2009, 08:42 PM   #31
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If you read this link it does say that inverts can get it.

Marine Fish Diseases and Parasites
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Old 10-16-2009, 08:42 PM   #32
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Invertebrates can indeed catch black ich
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Old 10-16-2009, 10:23 PM   #33
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If his eating fine, And going about his normal behaviour, Just leave it be. Catching him and doing all the sort of stuff can lead him to stress out major and die. Tangs are real stress heads.

If you see other things starting to get black ich, Then maybe do something about it, But as i said, If his normal and everything else is. It might just go away itself.
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Old 10-16-2009, 10:33 PM   #34
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Parasites don't just go away unless the animal is dieing, in which they have moved to better feeding grounds. If an animal has a parasite it is already compromised and stressed so the "stress factor" is moot. Fish to fish transmission has a 24hr time interval, give or take, and the reproduction rates of black ich is, well...quite intense.
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Old 10-16-2009, 11:27 PM   #35
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well basically i knew the yellow tang had black ich and i gave it fresh water dips like four times but it kept on getting them back. No other fish in the tank got it at any point. I did research and found out that i needed to leave the main tank without fish for a minimun of four weeks. I was certain that interbrates were not affected by black ich, so i left them in the main tank. I quarantined all the fish after a formalin bath and a freshwater dip almost three weeks ago. I never bothered to check the display tank after i took the fish out because i didn't think anyone else would be affected and i just wanted the four weeks to go by. Now it turns out that my two clearner shrimp might have it as well and therefore the parasite is still in my tank and the past three weeks of quarantine have been useless.
I will keep on doing research to find out if the shrimp might have anything else besides the black ich. My quarantine tank is overstocked at this point and i do not want to keep all those fish in there anylonger.
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Old 10-17-2009, 02:21 AM   #36
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Quote:
Originally Posted by melosu58 View Post
If you read this link it does say that inverts can get it.

Marine Fish Diseases and Parasites
I read it and must have missed that.
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Old 10-17-2009, 02:25 AM   #37
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From Mikes link on black ich, it has a 6 month period before it dies without a host not 4 weeks.
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Old 10-17-2009, 08:06 AM   #38
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White spot (ICH) dies in 4 to 6 weeks without a host.
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Old 10-17-2009, 02:45 PM   #39
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Yes, "white" spot (ICH) is a parasite and dies without a host in 4-6 wks.
"Black" spot is a Flat worm and dies without a host in 6 months. Big difference...
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Old 10-17-2009, 09:46 PM   #40
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I think leaving the tank fallow for 2-3 months is plenty as long as you gravel vacuum the substrate weekly or bi/weekly. A Formalin bath followed by a 5-10min fw dip before putting in qt. How long can black ich survive without a host? Dunno, but either does the article. It just states that it can survive for "several" months without a host meaning more than 2 months, but not necessarily more either. Noga states that some strains of Cryptocaryon "theronts requires that aquaria be left without fish for at least 3 months to be rid of the parasite." I guess what to take from this is you always qt your animals because strains of parasites and diseases always seem to find another way to baffle us just when you think you have them cornered.
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