The question has to do with flow, not filtration. Unless you've seriously undersized the filter, less than heavy flow
is fine. Flow
is more important for dispersing anything injected into the water column to ensure that it is even.
Biggerbang - under the filter output is usually a big deadspot.
Large high-tech tanks usually need another source for increased flow. Usually this another filter bc,ironically, its easier to hide than a powerhead