+1
I will get pics when I'm home from work, I'm upgrading from a 125 to 312 gallon tank in a couple months so quarantine for all the fish maybe would be the best thing, should I try a dip with the seachem before I put them in the fresh tank? Just to give them possible relief until I get the copper? Is copper stressful to them?
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Copper is less stressful on the fish than ich is. There’s no point to using the paraguard as it is ineffective against marine diseases.
I can't get a picture of her she won't come out from behind the intake for the filter I have, it's normal for her to hang out back there. She did eat when I came home she just wouldn't stop moving so I couldn't get a clear picture, I was able to see the white spots are gone and there is what looks like lesions on her one side where the spots were this morning. She's eating and seems to be moving normally, the spots were there for the first time this morning+1 on not using Paraguard, it is an adlehyde and malachite green, those chemicals just don't work will in marine systems.
As said, hyposalinity or copper would be your best bet, but copper can absorb into coral sand and rock, making it unfit for use later on if you want to get invertebrates.
Here is a post about hyposalinity:
Hyposalinity
Hyposalinity Jay Hemdal 2024 This term refers to a long-term bath treatment for marine fishes in which the salt content of the water is lowered and held below the point that certain parasites can survive. The salt level reached, and the time of the treatment are the two variables...
Jay
I definitely won't use copper in the display, I'm inclined to either just treat my dory in a qt tank with the copper or treat the whole tank with the seachem for the recommended 18 days since I've already bought it and it doesn't seem like it would hurt my tank. I don't think I am experienced enough to try the hyposalinity after reading what's involved. should I just set up the qt tank and put the dory in there with copper or wait and see if the white spots come back and do it then? I'm not able to provide a large enough qt tank for all the fish at once unfortunately.
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See how the spot near the tail seems pretty large and it comes to a point and has diffuse edges? That looks more like a mucus plug that an ich trophont. Hepatus tangs are prone to this. It could be the focus on the picture making it look like that, but if it looks like that in person, your tang may not have ich. What you should do is take a picture from the same angle tomorrow and then Sunday. If the same spots are in the same location, or if they go away and don't return, it is unlikely to be ich.
Ich will show as tiny white spots, the size of a grain of salt, that come and go over time, changing location.
You should still probably prepare to treat this fish - mucus spots and ich can show on a fish at the same time, but I think you need to do a little more diagnosing before running a full treatment on all of the fish (certainly other fish getting spots is more a symptom of ich).
Here is a copy of an article I wrote on skin mucus:
Mucus - The Slime That Binds
Mucus: The Slime that Binds Jay Hemdal C. 2020 This article examines the various causes of excess mucus coatings on fish, as well as fecal mucus issues. ------------------- The mucus produced by the fish’s epidermal cells gives them their...
