Looking to get some more movement and flow in my 125 african cichlid tank. Should I get a powerhead, or a circulation pump for this? Also whats the difference between the two? And should I get 2 pumps-one for each side?
I have an FX5 and a HOB
filter on the tank already, but I have both the outlets of the fx5 pointed up, because I have problems with an oil slick, so I needed some surface movement.