Loosing fish in two month old tank

Paulb18c5

New member
Hey everyone,
This is my first reef tank (I have had fresh water before) and been running into some issues. I will give you all the information on the tank first then explain what has been happening. I have an innovative marine Nuvo 38 that I let sit cycling for about a month and a half. Here is a list of all the equipment in the tank and some parameters:
"¢ Dual T5HO light fixture (ATI coral plus/ATI actinic)
"¢ Filter Floss (Media Rack)
"¢ Carbon (Media Rack)
"¢ Ceramic media bag (Media Rack)
"¢ 550gph return pump
"¢ Spin stream nozzles
"¢ 150w hydor heater
"¢ Hydor slim skim (larger version)
"¢ Jebao pp4
"¢ Salinity 1.025
"¢ Temperature 77F
So about two weeks ago I purchased my first pair of perc clowns and ended up losing both of them within two days. Realized my test kit was expired and I am borrowing an api kit from a local reefer. Tested my water and my levels were around .25-.5 ammonia, 0 nitrite and 30-40 nitrate. Not great but it doesn't seem like enough to kill a fish? I did two large water changes and ended up changing arpox 30% of the water. I monitored the water quality closely for few days and things looked stable. Water came down to 0 ammonia, 0 nitrite and 5-10 nitrate. I decided to tank a stab at it again and picked up one snow flake clown on Feb 22. I monitored things closely again and 3 days later I picked up a second snow flake clown as everything seemed great and the water quality. On Feb 26 I ended up picking up a 6 head frog spawn and added him to the tank. He has opened up nicely and is still doing great. On Feb 26 I noticed the original snow flake clown swimming around quite a bit with the lights out and had noticed they use to like to stick together in a corner when the lights are out. I didn't seem to think twice about it. I was quite happy with the tank at this point and was planning on leaving it for a few weeks to mature as is. Come Monday morning, immediately after waking up I check the tank and noticed he had passed (original clown I purchased on Feb 22). I took him out and tested my water immediately. The results were .25 ammonia, 0 nitrite and about 20 nitrates. I don't think this is enough to kill a fish still? The other clown seems to be doing well. I did a 10% water change and tested the water shortly after, 0 ammonia 0 nitrite and about 10 nitrates. The next morning I wake up and check the tank, the last clown was not doing well. His colors looked very pale and was barley swimming so I have him the flush. Not too sure what is happening here. Is the tank just too new or am I missing something here? I also checked for stray voltage and AC was 33 and DC was 0, are these acceptable numbers? I have done a lot of research before getting into this and have had help locally from a local reefer but we are stumped. What am I missing? Any help would be greatly appreciated.
 
Seems liked your tanks not fully cycled if you keep detecting ammonia. Plus were the clowns quarantine and treated for diseases?


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That was consideration on the tank not being fully cycled but it has been almost two months... I thought the small ammonia spiked were caused maybe by the fish passing?

Also as per quarantine I got the from a reputable shop and they had no signs of illness when i first got them. I mean in the perfect world i would like to have a quarantine tank hopefully in the future.

After looking up symptoms both diseases maybe could be brooklynella his colors were very faded and white? If so what next steps do i take?

Thank you everyone for the quick replies already!
 
My current understanding is any detectable trace of ammonia disqualifies a tank from having any livestock (i.e. stuff will just die)... How did you approach cycling the tank?

As a relative newcomer myself, I tried the "add live sand, rock and wait" approach, and after 2 weeks of nearly zero ammonia/nitrites/nitrates I added a deli shrimp (as it is suggested by many guides you can find online) and it quickly initiated a very testable and easy-to-comprehend cycle. A month after that the tank read zero ammonia and nitrites.

Did you foul your tank appropriately at the beginning as I describe to ensure a strong nitrogen cycle? Did you see an ammonia spike, followed by a nitrite spike, followed by ever-increasing nitrates?
 
As stated I tested before I got the fish the first time and the ammonia was 0 but after loosing my first fish I realized my test kit was expired. Second time I tried adding a clown I tested with a new test kit and the ammonia reading was 0. Couldn't a dying fish not cause a small spike in ammonia?

With the fish color fading it really makes me think that it is brook? What would the next steps be? Do need to treat or wait a month until I can reintroduce fish again?
 
Well API is known for not being reliable for ammonia testing and can give you false results at lower levels, so ammonia may or may not be the issue. Did you observe the fish before they passed? Were they breathing heavy or looking stressed?

I would not add anything further to the tank till you can find out what the problem and why fish are dying. This is why a QT tank is a blessing as you can treat the fish before introduction into the main tank. So most likely now you will have to let the tank fallow if it is an illness for several weeks.

I would advise you to take a look at this thread and it has lots of information on many of the fish illnesses.

http://www.reefcentral.com/forums/showthread.php?t=2390640
 
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After doing the research I believe that it is brook... I do recall the last pair acting irradically, hanging near the top, the massive loss in color/ looking pale. I do recall seeing some slime but nothing excessive that I can recall but I might of not looked close enough. Now that I think about it I do remember seeing them scratching on the sand occasionally and thinking some sand was stuck on them.

Does this sound like brook to you guys and if so next step leave the tank empty with no fish for 6 weeks? My two corals will be ok and not host this parasite?
 
The symptoms match with it. Do you have any remaining? A fresh water dip is the main way to treat it, with the rest of the fish kept in a quarantine tank. The tank should remain fish free for 8-12 weeks.
 
So I just want to make sure I'm following the correct procedure, no fish for 6 weeks from yesterday's date? Also can I add new corals during this period (they will be dipped in coralrx lol).

Appreciate everyone's help solving my issue! Never thought twice to look st diseases, thought my tank was too new but that doesn't matter.
 
I personally think the risk is low adding corals but I'm not sure I'd add anything at this moment. If you can setup a QT you could add some fish to the QT since you are going to have to wait for the DT to rid itself of hopefully all its issues disease wise.
 
Loosing fish in two month old tank

I would suggest that you learn all you can about QTing fish and coral so you can make an educated decision about the level of risk that you want to take. In other words, read the stickies.:-)


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