Fish are not doing well after water change

[tropicfisher]

I completed a routine 20% water change today (I do them weekly) for a 55 gal freshwater tank. My fish are now at the top gulping for air. I did a water test for nitrate/ammonia and the levels are normal. I also did a smaller water change again thinking it might be a dissolve O2 issue, but that isn't helping either. I'm a little lost as I haven't done anything different than what I have done for the past year. Anyone have any ideas? Feeling really bad for my fish.

 

[brennae]

Can you tell us more about your tank and inhabitants?

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[ImACoolguy]

did you forget to add water conditioner?

I've done this before and found mine almost gasping.


Caleb

 

[Brookster123]

Temp match? conditioner? What is your water source? Any major rains or flooding?

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[tropicfisher]

Temp match? conditioner? What is your water source? Any major rains or flooding?

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Yes the temperature did match, and I did use water conditioner - I use API Stress Coat. Water comes from tap. There was rain a few days ago.

 

[tropicfisher]

Can you tell us more about your tank and inhabitants?

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I have a live plants to start. And for fish I have 2 rainbow fish, 3 discus, 4 corys, 1 clown loach, 3 gold barbs.

 

[PoppaRyno]

Have you tested your water parameters?

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