Help Please Fish Has Gone Belly Up

[fish_for_life]

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Tank size: 16 gallons/ 65 litres
pH:7.5
ammonia: nil
nitrite: 0.8
nitrate:20
kH: no test
gH: no test
tank temp: 24 degrees Celsius

Fish Symptoms (include full description including lesion, color, location, fish behavior): seems to be dieing upside down gills flapping

Volume and Frequency of water changes: new tank no water change as of yet

Chemical Additives or Media in your tank: Nutrafin cycle against fishloss

Tank inhabitants:Three lemon tetras and three other tetras not sure what type. It is one of the lemons that is dieing

Recent additions to your tank (living or decoration): all six fish have only been in the tank for three days

Exposure to chemicals: no


The tank had been set up two weeks before we added the fish.

Please help this is the second batch of fish I have tried so please any help as soon as poss would be great.

Thank you

 

[Harlequins]

Preform a large waterchange with dechlorinator - look on your other post i have added whats happening with your tank.

 

[fish_for_life]

Preform a large waterchange with dechlorinator - look on your other post i have added whats happening with your tank.

Thanks alot another one of the lemon tetra has died now.
Exactly how much water do we change. is there a guide on here or elsewhere on how to do it.

 

[twodoctors]

Preform a large waterchange with dechlorinator - look on your other post i have added whats happening with your tank.

Thanks alot another one of the lemon tetra has died now.
Exactly how much water do we change. is there a guide on here or elsewhere on how to do it.

Your nitrite is very high. Simple mathematics will tell you that to bring the nitrite to 0.1 you'll need to change 7/8 of the water, 57L. The formula is:

(measured level- desired level)/measured level x volume of water = volume of water to be changed

Hope that helps.

Adrian

 

[Luzi]

It sounds like your tank hasn't finished cycling yet. Test the levels every day and do a 50% waterchange if there's ANY nitrite or ammonia.

Nitrite burns your fish's gills, which ends up suffocating them. If your fish start to gasp, check levels + waterchange