Fish dying brooknolya? Help!

I have a 220 setup with a 65gal sump. The tank has been setup now for 5 months. The fish are dying and I don't know what the cause is. The symptoms are white spots, scratching and staying in from of the power heads. These symptoms are what the powder brown had. He eventually got a mucas like a white stuff was coming off and he died. He lasted about 3 weeks.

Next fish was a blue face angel that was a juvinlie changing. Couldn't see any white spots on him but only on his fins. His eyes got cloudy and just wanted to stay at the bottom of the tank and rest. I didn't notice anything on him when the powder brown was ill. the blue face kept eating then died. He lasted from what we notices 1 week with the things we saw.

Next fish was a mandarin that just turned white and stopped swimming. Woke up next morning he was dead. He is hard to find in the tank so it was hard to watch him. There is plenty of copepods also in the tank.

Next fish was a black clown that has a dusting of white spots all over it. He lasted about 2 weeks.

Next fish is a coral beauty. Eating still and looks like the pic.

Next fish is a red sea sail fin tang. He is not dead as of yet and is still eating He has no white spots, but it looks like his scales are falling off. Plus he has cloudy eyes and heavy breathing.

Next fish is a vlaminan tang that is still alive. He was the last one to show any effects what so ever. He is still eating very strong, but hides a lot. He has no white spots, but the belly and his side is getting these marks that I don't know what they are. Plus he has cloudy eye and spots on his fins.

Now that tank parameters are

am-.25
no4 .08
n02-0
ph-8.0
no3-5.0
alk-7.0
cal-420
mag-1200
sal 1.024

I have bio pellets and gfo on the tank with a uv and a skimmer. The lights are led.

I also noticed about 1 week ago that I had stray voltage of 22v. I installed a ground probe and it went away. I know thats not a permeant fix, but it will do for now. Will this have caused this?

Im just wondering if its brooknolya, lateral line disease, or something else.

We quartined everybody also for 3 weeks.

Please help I don't want the vlaminan to die.

 

Sounds like Ick, but the 0.25 ammonia worries me that the dying fish are causing an ammonia spike which will cause further issues.
You might want to perform a bunch of water changes to get ahead of it.

Your initial issue of Ick can be combated with improved water quality and high quality food high in speralina.

J

 

Thanks....Thats what Im thinking it is. Im going to try and save the v-tang tonight and put him in q-tank. Im going to start METHYLENE BLUE dips also to see if I can save him.

Question thought should I use the water from my dt for the q-tank or just make up some new water and use amquail?

 

I would go with making up some new saltwater

 

We took the fish out last night except the chromes because they show no sign at all. We will get them out soon and let the tank go for 8 weeks. We decided to dip the 3 clowns in freshwater last night. Woke up and 2 were dead and the last one is actually doing better. We didn't dip the tangs or the coral beauty last night. Im thinking of dipping the coral beauty in formalin maybe ,but have heard mixed reviews on it. I have copper (mardel) in the HT with the lights off and going to change 50% water every other day.

Im going to get a new ammonia test kit today and see if mine is reading wrong. I have been using api but everything else is salifert and red sea.

I tell yeah this is more expensive then my car hoppy I had!

Should I do a Macacyn plus also in the HT?

 

The fish are eating in the HT tank so thats a good sign. The tangs aren't swimming to much, but the clown and coral beauty are. I still have the lights off and the room dark so they sony stress to much more.

 

I think it is probably velvet.

Here is a great article on treating velvet.
Marine Velvet Disease

Unfortunately when QT fish, you need to do it for 6-8 weeks. I unfortunately have seen several large tanks get completely wiped out from this infection.

You do not want to add ANY other fish for almost 6 months.

you do need to get the ammonia down, I would do a waterchange to see if you can get it down.

good luck