Contaminated tank with dead fish

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Qasim

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Hello,

I bought a false hose where i cleaned it very well and run water through it for a good period of time the hose was running water from my tank to my chiller 7 meters away from my tank. I woke up in next day to see all my fish laying side ways breathing to death. while checking the fish I saw my foxface was dead brown tang was breathing very slowly and was about to die. What I did I have a 20 gallon nano tank with two clowns and a nem. I had to move all my fish that were alive to the nano Two tangs yellow and brown, 3 pajama cardinals, 4 bengai cardinals, bi color blenny blue spotted sand goby yellow wrasse and my anthias. i took out all the corals as they were all closed up and were very unhappy due to the contamination from the hose. I started to prepare saltwater first then drained all the water from the tank and added back newly prepared saltwater to the tank. Now all my corals are much happier than before, however I have not added any fish back yet And here is my question if I should be adding any fish back to the tank? With the fresh salt water even my plate montipora is sending out its sweeper tentacles lobophylias flufier than before.

I have decided not to put back the brown tang only the yellow tang and the smaller fish will go back to the 100 gallon tank.
the question is will it be ok to put back smaller fish and then add the yellow tang after maybe a week or so? shall I wait? And what tests do you recommend me to do before doing anything?
 
If you have done a 100% water change I would probably run some carbon in a reactor and maybe a poly filter pad and get the fish moved back over. Those big fish will create ammonia and more likely oxygen issues in the nano if left very long.
 
Sorry for your situation.
I am curious did you have the chiller in use before?
Did you just replace the hose?

Somehow I think there is something more behing your situation.
 
I will add carbon and polyfilter I have a full bag of Aquaforest life biofil might use that as well. And start returning the little ones first.

yeah I was running the chiller before but it was runing inside the room as it was adding heat back to the room. I have purchased another set of hose and throw away the contaminated one. the chiller was running fine on the system for a good 4 months and i had no issues apart from phosphates that were runing around 0.5
 
One more thing to add since there are no fish in the tank I can see hundreds if not thousands of baby pods on the backwall
 
One more thing to add since there are no fish in the tank I can see hundreds if not thousands of baby pods on the backwall

Reading through this, what is a "false hose"? Some vinyl hoses can leach toxic material, and I've had issues with PVC glue if you don't let it cure 24 hours before use. I now use only material that is certified as for "potable water", or are items that I know are inert in water.

Jay
 
Reading through this, what is a "false hose"? Some vinyl hoses can leach toxic material, and I've had issues with PVC glue if you don't let it cure 24 hours before use. I now use only material that is certified as for "potable water", or are items that I know are inert in water.

Jay

I live in Northern Iraq and most of the plastic materials here are produced and imported from Iran. I try to avoid stuff from there as much as I can but the guy who i got it from was saying it is a very good quality and it is 4 season. Thankfully we have stores who bring in stuff from US and Europe and I went and got myself 42 feet that I will have to cut into two pieces to get the water to my chiller again. Thankfully the season is changing here and weather is cooling down a bit. I will not be running the chiller for a good 4-5 months but the water has to run through the pipes I gues so that I dont have ammonia built up inside the chillers compartments.

After this problem I lost my foxface and 3 bengai cardinals, thankfully my brown tang and Anthias made it.

I am glad that there were no more losses otherwise I would loose my mind.
i have moved the fish back to the display tank after doing ammonia test. I cant leave the fish in the 20 gallon tank due to the limited space in the small tank. And hopefully the fish will not be exposed to the toxic stuff again.
 

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