5 dead fish overnight, perfect water, any thoughts

[Jasonny5895]

I lost 5 fish a yellow, powder blue, kole tang, jawfish, and a royal garamma. My nitrate and amonia are 0. Recent changes: I added a 10 lb tonga branch rock from someone elses tank, a green mushroom rock and green carpet anemone from the same tank. Besides this i added a chiller lower the temp from 82 to 78 over night. Could the new additions or temp drop stressed the fish too much? I noticed there was a little ichon the tangs previous, could they have been weak and this put them over the edge. All my corals look beutiful, water clear and I have a UV sterilizer running

 

[Domboski]

Tough call. Usually mass death is due to water params. Whats your PH?

 

[scarf_ace1981]

i would get other test kits. maybe the chiller brought the temp dowm too quick? but then again 4 degrees isn't a whole lot.

 

[WaterPlant]

sorry for the lost

this kind of mystery always happens, i will be following this thread to see if you find the culprit

 

[ReeferGoneMad]

Sorry to hear that. The story is weird though. All corals are fine? What type of tests are you using? I would buy others just in case. Pretty weird still. Is there anything else that died like snails and hermits. Are there any marks on the fishes body.

 

[DEEPWATER]

srry for your loss ,,I too have my tank set at a 3 degree difrerance so i dout it was the the temp .plus 82 to 78 is pretty much what i keep my main t ank on

,what size is your tank ,how long do oyu have the fish for.what test kit are you using ?

Ronen

 

[herman]

No way its the temp. that swing is too small for such a detrimental effect. You mentioned Ich and dead fish. Chances are your water simply sucks. But then again your corals are fine. That too depends on the coral. If by coral you are talking about Kenya trees, well they are harder to kill that cockroaches.

If however you are talking about SPS and their color is great etc etc then I would check for stray current in your tank. If there is a stray current just add a grounding probe. Cheap and effective. You should have one of these on your tank anyway.

Keep us posted. Im curious

 

[spykes]

No way its the temp. that swing is too small for such a detrimental effect. You mentioned Ich and dead fish. Chances are your water simply sucks. But then again your corals are fine. That too depends on the coral. If by coral you are talking about Kenya trees, well they are harder to kill that cockroaches.

If however you are talking about SPS and their color is great etc etc then I would check for stray current in your tank. If there is a stray current just add a grounding probe. Cheap and effective. You should have one of these on your tank anyway.

Keep us posted. Im curious

cant say i could've put this better myself. great info herm

 

[ajcut7]

Maybe stay up one night and make sure that the chiller didnt work a little too well? maybe the temp isnt working right and its actually getting much lower than 78? just a thought i've never actually used a chiller

 

[ReeferGoneMad]

dude it could be a stray current so that means any fish you put in there passes that current its over.

do you use any aerosol sprays, colonge, or cleaning produsts in the tank room? could you have dropped something in the tank? do you run phosban.

this could be endless until you yourself finds the problem. 5 dead fish in one night thats weird? i mean ive had a firefish jump out and die but thats it. no multiple deaths like that.

 

[reefman]

what else do u have in the tank? sounds like a toxin was release. any effect on corals . any other fishes survived?

 

[R32Brightliner]

what else do u have in the tank? sounds like a toxin was release. any effect on corals . any other fishes survived?

I agree. Sounds like some type of toxin was relsease. Too drastic a measure for multple things to die at once...

 

[Vic8361]

Sorry about your lost.
sounds like toxin to me. That happen to me about 7yrs ago lost about five fish and I found out that my wife had sprayed her hiar right by the tank. It was a sad day for me.

Vic

 

[qy7400]

You mentioned adding some rock, hear any clicking in the tank?

Ich could have been a cause but usually you'll notice the fish breathing heavy.