Do pond fish always need air?

in general no

the size of the pond, the depth of the pond..if deep enough then no, if large enough then no other wise keep one on

but in the hot hot weather oxygen gets less in there so it needs to be on

when the weather gets real cold and ice starts, needs air

and a few other reasons

so why not just have a smaller unit pumping air all the time

it will keep the pond in much better shape all around

just like having the water fall into the pond make oxygen get into the water, so you can do it that way, plus it moves the water around too

smile

good luck

I had a pond and the fish go up to the pond surface to get air anyway so it really doesn't matter. in the winter if it freezes there will be air trapped under the ice so the will still be able to breathe. Pond fish like most goldfish like cold water so just make sure it's deep enough to their liking because if not they may try to jump out. hope it helped!

I thought that the pump just helped to stop algae forming. I suppose that as long as nothing covers the surface, you don't really need a pump for an outdoor pond. Use chicken wired over the surface to stop predators from eating the fish.

Not all breeds really need to pump air into the jar.But its always recommend if u really love to have an aquarium full a beautiful species.

See this will help you out;

http://www.pond.com/pond-supplies

no becuase there is enough air for them to live a few days with out the pump

HI I HAVE POND I HAVE KOI IN MY TANK I DONT HAVE PUP OR AIR IN THE POND AND NOW ITS DOING FINE

I HOPE I HELPED