Almost all of my fish are dead and dying help

[HarlanAshmore]

electric yellows guppies and puffers together probly isnt a good thing either

 

[CoryWM]

Refrain from using chemicals. Water changes are your better option. Believe it or not, most chemicals do not work efficiently. Doing more water changes eliminates ammonia, nitrite and nitrate in the process. Please get API liquid test kit and test for those three variables. Bigspizz is correct. We need those water parameters.

If your filter is producing vigorous surface movements, oxygen is not an issue. This is ammonia and nitrite intoxication. Only water changes can correct that. With that size of stock list, I would be doing 4 times water changes in a week by at least 40-50%.

I agree with Lupin. Do a 50% water change, every other day for a week. Only using the chemical to get rid of chlorine/chloramine. All the other chemicals will add stress to your fish.

Even common aquarium salt. It will increase oxygen absorption. However at the time, aquarium salt also will release any ammonia that is currently locked up by the carbon in your filter etc.

Also cut feeding off for this week. Just watch that your puffer doesn't start taking out it's tank mates.

 

[tess24278]

Thanks everyone and actually the puffer gets along wit the lab and the guppys the only fish he ever went after was a panda Cory I never had any fighting or territorial issues that I could see with my fish.