HELP!!!! My Cory Cats are dying!!!

[LittleFish]

The other day, one of my Cory Cats was spinning and gasping for air at the surface. I changed the water, but the next day, 3 of my corys were dead. Now my Cardinal Tetras are acting the same way. My filter is not working that great, probably because the pump slightly short-curcited when some water got into the outlit. Can anyone try to help me here???? I am really worried about this.

[Fish_Genius]

My filter is not working that great, probably because the pump slightly short-curcited when some water got into the outlit. Can anyone try to help me here???? I am really worried about this.

You just answered your own question. When your pump short-curcited, it shocked your fish, making them act strange.

[Mr.HugeSHOT]

Hmmmmmmmm..... replace the external pump in your filter if you have one, that will prevent a worse one from happening.

[Fish_Genius]

Also, when there is a short-circut, try to unplug the filter so when the power comes back, the electricity wont fry the pump.