I have my 55 gal. tank and it has a top fin 60 filter. Is that ok? Do i need another filter or airstone to extra aggetation(?) of water? What do guys think?
IMHO I would go with something bigger or at least add another. I like the Emporers or penguins(both have biowheels). I'm assuming you bought the 55g kit from Petsmart.
With more filtration, you can increase you bioload a bit, plus your fish will be happier and healthier.