fish not lookn good

If you have a skimmer and or/open top etc... really you can rule out lack of O2. I've never seen or heard of a tank having O2 problems if there is any reasonable amount of gas exchange. With the exception of O2, corals are much more prone to most environmental factors then fish, so, if they look good, I'd probably guess ammonia, nitrate etc... can be ruled out. That leaves diseases as the most likely scenario. Flukes, protozoan etc... can all cause the symptoms your describing. I would tend to look in that direction first., although certainly keeping water quality optimal is always good practice.

 

Even after a year with no additions? This is confusing me...im wondering if something poluted the tank like a neighbor mowing the lawn mabe? Something like that?

 

We need the rest of your parameters to help. Pictures maybe? Is your water cloudy? What is in the tank (livestock wise)? Do you have a sump?

We need some history.

 

Tank is 2 and a halfish years old home to lps and softies.I saved 3 fish and that's y I havd them, a sohol a purple tang and a foxface all small.a local reefer got stunng by the foxface and was going to flush them in anger so I took them.I also have a potters angel about 1.5inches and a leopard wrasse. All fish and coral have been there for atleast a year except the wrasse whose been here for the majority of the tank.I have a 10g fuge with chato. I have a remora proo with mag5 pump.koralia 3 and mj1200 and a brs dual reactor with carn and gfo.and added just an hr ago another carbon reactor

 

Certainly some parasites can last dormant for that long. Sometimes they can settle into the sand for example, then sand gets stirred up and they are released. Also, it's possible some can find their way in through fish food. Certainly time helps, but isn't a guarantee. If you have a lot of fish for a 55g, so, it would make sense that there are some ammonia spikes occurring. At some point, it could have weakened one or more of your fishes immune systems, enough for an infection to take hold. From there, it could spread to the other fish. Maybe the corals wilted a bit during the spike, but have recovered already.

That's my best guess anyways. You do have a lot of fish, which can use up O2 as well, but still if you have a skimmer it seems unlikely, you could always add an airstone temporarily or something and see what happens though. Also, carbon and a poly filter could rule out contaminants, although, there just aren't many contaminants that will effect fish and not corals, but anythings possible...

 

Im making the call to move the surviving fish to the new tank :/....potters and foxface are both dead and testing again reveals 0 amonia in the new set up

 

My dads making watter now I had him add amquil plus to the tank to combat amo ia if its there

 

Gotta have your params. You have no Amonia?? Have you treated the tank for any kind of parasites? Some medications give false amonia readings. How long was the power off? How long has the power been on? My first instinct is bad O2 but you said you think its good. Need more info. Fish dont start to die for the fun of it. Your dad is making the water? Chlorine chloramines?? Is it being made correctly? PH? Potters dont like PH swings. The only parasite that can strike and kill in this short amount of time is Velvet. If your fish are infested with Velvet....you might have a 10 percent chance of saving them at this point. So I think your water is bad. INFO!!!

 

How many fish are you moving? If your cycle is complete you might be okay as long as you dont over load the established bacteria.

 

Wdll I managed to keep ghem in their tank I lost the potters and the fooxface ...but after a huge amount of carbon along with swappinng the skimmer oonto a mag 7 skimming very wet ,prime,and roughly 20 gallon wc (ro/di plus salt) fish are breathing ok and I think I may have averted the chrisis.they are eating swimming and breathing nnormal.to the lfs I go tmo for more salt.

I broke my cardinal rule of keeping atleast 40gallons of fresh sw ready and it bit me in the rump.lesson learned going to buy tons of extra salt tmo.(I broke my rule bc I had 300gallons too mmake to fill the new tank and I've been to busy with the tank to go to the lfs)

Still don't know the exact cause and still have a missing potters angel but aslong as the others are ok it could have been worse