Help fish dying

[leannaby]

Help I've had 3 tetras die since I did a water change..

 

[cgthebeast]

Did you decloriante it? How big a water change, cleaned the filter?

 

[leannaby]

It's a 20g.. I did a 50% water change.. Cleaned the filter in the dirty water.. I put stress stop into it

 

[leannaby]

I've noticed one gill on a black neon tetra seems to be quite red and reduced.. Is this ammonia burns and if so how do I solve it ??

 

[Rare]

What is stress stop? Can you link me to their product....

 

[leannaby]

Hi sorry it's stress coat by API

 

[Rare]

Did you dose for the whole aquarium size or the PWC you did? Did you add the correct amount? Did you noticed anything about the fish after PWC? Sitting at the bottom not moving? At the top gasping for air....etc or was all normal?

 

[leannaby]

Everything was normal..but then one black tetra went quick pale and died and now have had two further tetras die.. I only dosed for the amount I did a wc.. Will another change help ??

 

[Rare]

Do you have any test kit to test for ammonia? Whatever you added to the PWC take in account and add as if you were dosing the whole aquarium.

 

[leannaby]

Need to get a master test kit.. Will add further to account for whole tank

 

[leannaby]

this is what the Gil looks like