Can you overfilter?

We do not know since the OP did not state it.
 
I have a 29 gal tank with 2 round body red cap orandas, each is about 4 inches max from "stem to stern". The filter is a Top Fin 30 with charcoal medium that cycles 150 gal/hour. All my water parms are good, except I
am still tring to get the ammonia level down to zero...usually it is about .25

I was looking at an Aqua Clear 300...is this too much?
 
I run most of my freshwater tanks filters at between 5 and 10 times an hour turnover. I think it just depends on the fish that you are keeping and what thier needs are.

Marinemom
 
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