What is the difference between...

[lennon]

Just wondering if I need to get both airpumps and powerheads for my tank.
I am getting a 49 gallon tank with refugium. The DT is 36 1/2" wide and 15 depth.
I am not sure what I would need for this. Can someone suggest something.
Money is not an issue..so I would like to purchase the quietest equipment out there.
Can these be put in the sump? or do I need some for water flow on the water..I assume so.
Thanks to anyone that helps...

 

[thangbom]

not shure of what it is your getting at but.. i think that u think. (he he confused now are we) that u need a air pump to oxygenate water??.. well in truth.. the little bubles are not what puts most of the air into the water ( the little bubles have to little of surface area for the size 0f a tank to oxygenate it..) .. it's the surface movements that adds the air.. so you just need a pump of some sort..

 

[kdfrosty]

Air pumps are generally not used in saltwater. Powerheads are the way to go. I'd suggest Maxijet 900's and 1200's depending on what type of flow you're looking for.