What Size Air Pump?

[Bexley333]

Please can someone tell me a good size air pump for a 60L (15gallon) tank?

 

[samiam9818]

if you look on most boxes it will say what size tank each is suited for

 

[three-fingers]

Also, what is it for?

If it's just for bubbles, it doesnt matter what the size of tank is really, it's more important what kind/size of airstone your using.