Too much bio-filtration? Is there such a thing?

Hi my fishy friends,

Q: Is there such a thing as "too much bio-filtration"?

Q: Would doubling or quadrupling water turnover (from the 10X rule of
thumb) be safety redundant or just a big waste of money? Mind you I'm
not using any UG filtration as I hate those dirt holders!

I now have a 29 gal with only one cute little Spotted Green Puffer and
a AC 110 set on the 300 gph "low setting".

I now have two 55 gal's each with one AC110 on the 500 gph "high
setting" and since the tanks are so wide I'm considering to add another
AC110 to each! I love these filters, I'd throw a couple in my bath tub
if I could!!!

One 55 is a Clown Loach tank, the other is a Sichlid/catfish tank and
neither is "over populated" as of now but I hear talk that the fish
will grow bigger and bigger.

Thanks, Karl.


P.s. WTB, 75/90 gal project tank around PHX AZ, email please...