Powerhead -vs- air pump

[duke33]

I bought a 330gph fountain pump at lowes plugged it in and dropped it in the 300g, directed it towards the surface, and am pleased with what it's doing.

 

[chadc]

That pump doesn't have a venturi. If it's a closed/semi-closed system, they will run out of oxygen eventually.

That is fair enough, thinking about hiding it at he bottom of the tank and pointing the stream up the way and see if it makes a difference... in this way it should boil at the surface, hopefully creating a oxygen exchange...

Still want to get rid of the air bubbler at some stage.

 

[ahfu25]

No air pumps for me, I use 2 eheim aquaballs in my 75 and 1 in my 55. I use them to brake the surface of the water. My fish are thriving, not surviving!!!

 

[chadc]

Just for an update, the clown loaches love swimming against the current that the big powerhead makes, they have never spent so much time out in the tank before, they used to always hide whenever people came near, and come out when it was feeding time. But now, they pay less attention and just spend their time swimming against the water flow.