Can anyone identify this disease/ fish killer?

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Tank has been stable for several years now (100 l tank) and only have soft coral and hardy fish. 

The suddenly a damsel fish died, water parameters were fine coral , shrimp anemone all good but had been eaten a bit by the time I found in the morning so did not see anything untoward - then the other damsel died and a clown in quick succession.

I did 80% water change re-checked parameters again and had to go always for Christmas and left neighbour on feeding duty.

Whe I came back i noticed lion fish looking like something on it’s eyes and colour was washed out, the died the next day.

I can see a similar thing on my gobi and looks like it’s starting on the tang too.

Can anyone identify what maybe infecting the tank? All coral, invertebrates are fine. I ha e some photos but my phone really picks up the blue light






I have some another 50% water change today and was going to do another 50% tomorrow. I ha e put a carbon filter bag in and one of these:


Any advice on what this can be and treatments I could try?

I spoke to my LFS and they speculated poisoning but I can’t think what could have got in, it’s a closed tank.

Please help my last 2 fish will thank you as will I as totally at a loss here


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A1

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Reply #1

Photos hard to tell, sorry for the loss!!

Have you considered Velvet/Ich

Failing that and complete speculation any air Fresheners near tank, scented candles etc??


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rik derris

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Reply #2

I will try and get some better photos, the tang is so sensitive and runs when I get near with the phone to the tank!

However since posting I kept researching and yea to me all the symptoms to fit velvet not least rapid fish death and otherwise stable parameters.

I have not added a fish for about a year until the lion fish till in early December which could point to patient zero  …


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rik derris

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Reply #3

Ok in a few hours it seems to have gotten worse for the tang and many more white spots on face and fins.

They are still quick but hopefully these shots are clearer but you will still need to zoom in







Not sure if  you can see from the picture but there are lots of white spots  around the face and fins :-( 


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A1

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Reply #4

Looks like Velvet to me, I’m not expert.. ich tends to be large spots like grains...

I want to be positive but a hospital tank and copper treatment is realistically your only hope IMHO..

I don’t want to be rude or risk discarding others educated opinions but Reef safe treatments just don’t cut it for me..

Obviously copper is deadly to invertebrates and coral..

If you haven’t got a hospital tank, hopefully some of the others guys on here can share experience of reef safe treatments in the hope of helping you!

Good luck pal


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ajm83

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Reply #5

Yeah quarantine will be by far the best way,  your only other really effective option is to get a big and decent UV system plumbed in.

I'm not sure exactly what that is from the photos to be honest but UV or copper will treat ich and velvet.

If you go the QT route, Copper Power is the best copper treatment I've used but you can't always get it easily in the UK  :offended:  The second best is Cupramine. 

Note that ich and velvet remain in the tank some time after treatment, so if you go that route you will need an empty tank for a while ('fallow') to make sure all the parasites left in the tank die off.
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rik derris

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Reply #6

In the daylight I have some better pictures that may make it i easier to identify. - I’m looking at the spots on the fins and around the face of the tang. The gobi has these too but hard to tell from the angles and the eyes look so bad

I don’t have a QT but will start to get one together if not in time to save these to make sure all new fish go in there first. If I get it running it time I assume I will need to keep the fish in there until the fallow period is over (was going to wait 75 days)

Are there any good link for setting up a QT? I will have to go down small plastic food box route but was wandering how I keep the ecosystem alive without living rock (from what I read you should not put rocks in as it absorbs  the copper, reducing it to below medical values)





Thanks for all the advice and help all!


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HK_Fuey

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Reply #8

"A quick way to set up the QT, would be to grab a cheap tank from somewhere, take some liverock out the main tank, and water, and dump them all in it.  You can also help immediately by lowering salinity in the QT to 1.009 (don't do this in the main tank, as you'll kill corals, snails, shrimps, worms, etc.).  Fish can take a sudden drop in salinity no problem, but you must raise it very slowly."
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HK_Fuey

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Reply #9

A big robust plastic tub will do the trick too
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rik derris

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Reply #10

Thanks and that guide is great, i was reading how to treat and was rather intimidated by how complicated and technical it was going to be - however your post is clear and easy to follow.  Just ordering a 30Ll food-safe container now to start, hopefully, I can get it all set up in time to save them. 


As the QT fish will need to stay in the small tank for 3 months while I leave the DT to go fallow, do you think the sponge filter will be ok or should I really be looking at getting a small internal skimmer?


Has anyone had any experience of this https://uk.vitamingrocer.com/products/endich-copper-power-blue-for-saltwater-305826


I was going to get this to treat


Then get a big live rock from LFS


and this to cycle the QT Seachem Stability Tank Stabilization System or will the live rock be enough (going to use 30L plastic food-safe tub)

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Reply #11

If it is velvet ,
Treatment

Raise water temperature
Dim lights for several days
Add aquarium salt
Treat with Mardel Coppersafe® for ten days
Discontinue carbon filtration during treatment
This is one option
Dave
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ajm83

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Reply #12

Thanks and that guide is great, i was reading how to treat and was rather intimidated by how complicated and technical it was going to be - however your post is clear and easy to follow.  Just ordering a 30Ll food-safe container now to start, hopefully, I can get it all set up in time to save them. 


As the QT fish will need to stay in the small tank for 3 months while I leave the DT to go fallow, do you think the sponge filter will be ok or should I really be looking at getting a small internal skimmer?


Has anyone had any experience of this https://uk.vitamingrocer.com/products/endich-copper-power-blue-for-saltwater-305826


I was going to get this to treat


Then get a big live rock from LFS


and this to cycle the QT Seachem Stability Tank Stabilization System or will the live rock be enough (going to use 30L plastic food-safe tub)


Yes that's exactly the product I was recommending earlier, it's really really good and a lot easier on the fish than Cupramine.

I use it at 2.0ppm.  The best cheap test kit for it is the API one. The Hanna one is better but costs (a lot) more.

There is a calculator which tells you how much to dose to get a given PPM here (note it is in US gallons - 10L = 2.64 US gal):
https://www.calconic.com/calculator-widgets/copper-power-calculator/5c1f3b80cfbb64001b85c089
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