Fish at the top

[Michaeljordan42]

What are they doing

 

[Fresh2o]

They may be gasping at the surface for oxygen.

Has anything changed in the tank recently? What is the tank size, what filtration and aeration is being used? What other fish are present?

 

[Michaeljordan42]

They may be gasping at the surface for oxygen.

Has anything changed in the tank recently? What is the tank size, what filtration and aeration is being used? What other fish are present?

Just did a water change tank size 120 I have 2 marine land canister filters one for 100 gallon the other for 30 gallon 3 oscars 2 jack Dempsey

 

[TheCommunityCichlid]

Are your filters disrupting the surface? Did you add any chemicals

 

[dellis]

Did you add any buffer?

 

[rotorhead22]

Was your tank cycled? How large a water change? Did you use water conditioner to remove chlorine? How did you rinse your filter media? What are your water parameters (ammonia, nitrites)?