What in the world is going on?

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Siguun

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TLDR; at the bottom

Back Story - The SO's tank is 2 months old and used to be the resident of a domino damsel. The SO wanted two clowns but didn't want to get rid of the damsel. Damsel was moved to my tank while we went to the LFS and picked up two clowns. (One big one and another small one. For the story sake we will call them Big clown and Small clown #1) Was told get different sizes so they don't fight out to see which will end up dominant. Also was told by the LFS to do a freshwater dip with some Seachem Prime for about 5 min just to cautious of disease etc. Get home, did fresh water dip. Big clown one swam around in the fresh water dip while the small clown #1 was just laying there on its side. After seeing various youtube videos we saw this can be normal and that freshwater dips are just not fun for any saltwater fish. 5 min mark we removed both clowns and put them in the tank. The big clown was fine but the small clown #1 was dragging along the floor and kept sinking. Something was wrong. We let it go for a couple more minutes in order to not stress it out any more but eventually the hermits starting nipping at him and he died. Ended up contacting the LFS they apologized about the fish (Even though I don't think it is their fault?) and asked us to come in to get a new one. We went back got a new clown. This is small clown #2. This time it was advised of us not to freshwater dip and just acclimate him like we would any other fish. So we did. (Btw this was Sunday of last week.) Put him in the tank he seemed happy. We tried to feed them but neither was would eat at all. We thought this would be normal because we read sometimes they are picky and/or they are getting used to the tank and won't eat. Next day (Monday) approx 1630 small clown #2 has several small white bumps on him and is clearly not doing well. (picture at the end) We of course being beginners, are at a lost for what to do and contact LFS. They tell us to keep an eye on the little one and see if his situation gets any worse and to report back if it does. Well about 3 min later that situation gets really bad. Small clown #2 starts showing the same signs as small clown #1 and dies in a span of aprox 5 min. Okay now at this point the SO is devastated. We contact LFS they tell us wait a week to see how Big clown does. Big clown has no spots on him and just acts, what we assume like any clown (kinda weird compared to the domino damsel...). Big clown still won't eat. Fast forward (Wednesday) LFS contacts me lets me know they got a new batch of clowns in and they have set aside clown #3 for us (already fresh water dipped). We pick it up Thursday afternoon acclimate him and add him to the tank. Big clown and clown #3 seem some what happy swimming around together but neither will eat still. Friday, we see a white spot has formed on small clown #3. Other than not eating small clown #3 shows NO sign of being in distress. He swims around normally and isn't dragging around or breathing heavy. LFS tells us to keep an eye on him and make sure he eats. They still both won't eat at this point. Now come yesterday. Small clown #3 white spots are spreading through out his body. Still doesn't look distressed but also still will not eat, but big clown has started to eat now! Yay! (and alot). Late last night we get contact from LFS to do a fresh water dip on clown #3 with the seachem prime due to the white spots. I was hesitant at first because he was not acting unusual just had the white spots. Seeing how I have really no experience in this kind of stuff I followed what LFS said to do and do a freshwater dip on the small clown #3 for 3 min. We did that and oddly enough small clown #3 didn't seem distressed. Swam in the fresh water dip perfectly fine. We reintroduced him to the tank and watched him for a couple hours to make sure he was okay. He seemed like nothing ever even happened. Now about 20 min ago this morning. Small clown #3 is missing and can't seem to find him. Found him being stuck up against the filter. Shut off the filter and he was spasm swimming. He would swim really fast then sink to the bottom of the tank in awkward angles. He was showing the same death signed that the first two were. He died this morning in less than 30 seconds. This has been a nightmare.

Water parameters - PH 8.2, Ammonia 0, Nitrite 0, and Nitrate 10. 1.023 Salinity(Checked water parameters every time a fish died and this has been around what it was)

TLDR; Every new small clown we add keeps dying. 2 of them died with white spots but the bigger clown we have in the tank is fine.

Question - So not really sure what is going on. Is the tank infected with something that we need to fix? If so why is big clown okay? Is it because he is bigger and his immune system is better? or is it big clown that is infecting the small clowns? Would like to figure what may be going on before we do any more adding of anything.

Let me know if you guys have any questions and I will do my best to give you what ever you may need.

Clown #2

Clown 2.jpg


Clown 2-1.jpg


Clown #3

Clown 3.jpg


Clown 3-1.jpg


Clown 3-2.jpg
 
Sorry for your losses.

First thing would be to slow down and stop replacing fish until we can figure out what’s going on.

In your 4th picture from the top with 2 clowns is the one on the left injured and are those wounds showing? Was that the fish that got stuck in the powerhead? Speaking of, you should make sure to put some net over that powerhead as it’s very likely to happen again especially with clowns.

Considering, we are talking clowns and white spots and there are some what appear whitish blemishes on the clown 2 it could be brooklynella. Velvet is another possibility given fast deaths. But it’s a bit hard to tell.

Did you properly acclimate the clowns to different salinity between your tank and the LFS?

Did you acclimate the fish before doing a FW dip? Did you notice anything falling off the fish after the dip?

Is that a white spot on clown’s head?
 
In your 4th picture from the top with 2 clowns is the one on the left injured and are those wounds showing? - Those are the "white spots" they were white at first then turned kinda red. The picture above shows just a white "pimple" turned into that white / redish spot.
Was that the fish that got stuck in the powerhead? - There are no power heads in the tank just a filter.

Did you properly acclimate the clowns to different salinity between your tank and the LFS? - I am pretty sure we did? We got the bag and added about 1/2 cup of the tank water every 4 minutes. When the bag got full we dumped half the water out of the bag out into the sink then refilled it back up again with the same 1/2 cup 4 min process. We always set the bag in the tank first to acclimate the temp before doing anything else.

Did you acclimate the fish before doing a FW dip? Did you notice anything falling off the fish after the dip? - As for the fresh water dip we put RO/DI water in a zip lock bag and floated the bag in tank water for 15 min to get the temp up. Then poured that water in a bucket with 2 drops of sea chem prime. No didn't see anything fall off the fish. Was looking for that because i thought it could be ich? but from everything i saw online ich seemed more like white salt like bumps on the fish where these white spots were more like blotches. Looked around in the bucket for anything that may have fallen but didn't see anything also in hind sight i used a white bucket so that was probably stupid of me.

Is that a white spot on clown’s head? - yes that is a white spot on his head but he died before we got to FW dip him. that was clown #2 where he died before we got a chance to do anything with him.


Update: I contacted the LFS and they said they might have gotten a bad batch from their wholesaler. I am still worried though if the tank is now infected or was infected or whatever it may be. The good part is the bigger clown fish is swimming happily around with no white spots and is eating plenty now! I still am worried though anything precautionary we can do to the tank with out hurting the remaining clown and the inverts?
 
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I would QT all fish and go fishless on your tank for I believe it's 72 days. On the safe side.
 
Could be brooklynella:

https://www.reef2reef.com/threads/fish-diseases-101.189284/

There is no need to FW dip any fish unless it is showing signs of parasites.

If your LFS is using copper in their tanks and the clowns were in that water and that water was in the bags that the fish came in, using prime is a big no no.


From humblefish:

Ammonia reducer + Cupramine (ionic copper) usually means a tank full of dead fish, as the ammonia reducer will increase Cupramine's toxicity 10x.

Another thing that could be going on is aggression. Domino's are known aggressors.
 
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I would QT all fish and go fishless on your tank for I believe it's 72 days. On the safe side.

Unfortunately we are fairly new to the hobby so we do not have a QT nor the space for one.

There is no need to FW dip any fish unless it is showing signs of parasites.

Ah okay. I thought I read people do FW dips for preventative measures.

Another thing that could be going on is aggression. Domino's are known aggressors.

Domino is in another tank.
 

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