undergravel filter vs overhang filter on a 75g tank?

[shanerenshaw2003]

What would be best for this size of a tank?

 

[Martin]

depends on how deep and how long it is.... my tank has an undergravel filter.... my tank is a 18inch deep 35 gallon tank i personally like undergravel.... and u dont have to clean gravel as well because of the bacteria ( so ive been told....) uhm email me if u want....

 

[DarrylR]

Undergravel moves everything under the substrate, while overhang sucks up anything by intake tube.

I would use both for optimum cleaning.

 

[ajmommy002]

I use both.