i want to know if bubble bars put oxygen in the water if so i have the diff ones in one tank and 2 are pretty big one small they each have a diff little pump i need to know if it will keep enough oxygen in the water for my 1 catfish in it?
What kind of filters do you have? If you have power filters, or a canister filter with a spraybar breaking the surface of the water, then you should have plenty of oxygen for your catfish.
And, yes, bubble bars put oxygen in the water. When the bubbles rise to the surface and pop at the surface, they disperse oxygen into the water.