Help - Fish Breathing Rapid

MetaKnight101 · Sep 22, 2018

My fish are breathing rapidly and I have no clue why. I checked ammonia ,it was near undetectable, I checked for nitrate which was under 20 ppm. So some back story today, I decided to try out Selcon Concentrate and soaked my mys-sis shrimp and my fish loved it. (Not sure if this could be the cause) Then after feeding 3-4 hours later they were breathing rapidly. I checked for ammonia and nitrate as I said and they were safe. I just finished a 25% Water change. I'm hoped it fixed the problem. Does anyone know what caused this. Any tips on what to do?
ALL fish are breathing heavy so its prob not ich or fluke or any of those

Stock List - Fowlr
2 Mocha Gladiator Clownfish
1 Yellow tang
1 Clown goby
1 Diamond Goby
1 Powder Brown tang - *who is hopefully moving this week since he is too big for the tank*

Humblefish · Sep 22, 2018

Selcon shouldn't cause that. Any other possible environmental issues with your tank? Toxin in the water, low oxygen??

MetaKnight101 · Sep 23, 2018

I have 3 power heads and a bubbler so I don’t think oxygen is a problem. I’m not sure if it was from the outside environment since I have a fully closed lid. After the 25% water change they are breathing less rapid. But still rapid, so something is lurking in the in the water that I don’t know.